0@a@a 0@abc@abc 0@abc|de@abc 0@a|b|c@abc 0@a(b)c@abc 2@a(@EPAREN 0@a\(@a( 2@a(b@EPAREN 0@a)@a)@POSIX BOTCH 0@)@)@POSIX BOTCH 0@a()b@ab 0@^abc$@abc 1@a^b@a^b 1@a$b@a$b 0@^@abc 0@$@abc 0@^$@@ 0@$^@@ 0@^^@@ 0@$$@@ 0@a*(^b$)c*@b 2@|@EMPTY@NO ALTERNATION 2@*@BADRPT@TO CORRECT 2@+@BADRPT@TO CORRECT 2@?@BADRPT@TO CORRECT 1@&C@PASS 0@()@abc 2@a||b@EMPTY@NO ALTERNATION 2@|ab@EMPTY@NO ALTERNATION 2@ab|@EMPTY@NO ALTERNATION 2@(|a)b@EMPTY@NO ALTERNATION 2@(a|)b@EMPTY@NO ALTERNATION 2@(*a)@BADRPT@TO CORRECT 2@(+a)@BADRPT@TO CORRECT 2@(?a)@BADRPT@TO CORRECT 2@({1}a)@BADRPT@TO CORRECT 2@(a|*b)@BADRPT@NO ALTERNATION 2@(a|+b)@BADRPT@NO ALTERNATION 2@(a|?b)@BADRPT@NO ALTERNATION 2@(a|{1}b)@BADRPT@NO ALTERNATION 2@^*@BADRPT@TO CORRECT 2@^+@BADRPT@TO CORRECT 2@^?@BADRPT@TO CORRECT 2@^{1}@BADRPT@TO CORRECT 0@a.c@abc 0@a[bc]d@abd 0@a\*c@a*c 0@a\\b@a\b@TO CORRECT 0@a\\\*b@a\*b@SHELL TROUBLE 0@a\bc@abc@TO CORRECT 2@a\@EESCAPE@SHELL TROUBLE 0@a\\bc@a\bc@TO CORRECT 0@a\[b@a[b 2@a[b@EBRACK 0@a$@a 1@a$@a$ 1@a\$@a@SHELL TROUBLE 0@a\$@a$@SHELL TROUBLE 1@a\\$@a 1@a\\$@a$@SHELL TROUBLE 1@a\\$@a\$@SHELL TROUBLE 0@a\\$@a\@SHEL TROUBLE 0@ab*c@abc 0@ab+c@abc 0@ab?c@abc 0@{@{@TO CORRECT 0@{abc@{abc@TO CORRECT 0@{1@{1 2@{1}@BADRPT@TO CORRECT 0@a{b@a{b@TO CORRECT 0@a{1}b@ab 0@a{1,}b@ab 0@a{1,2}b@aab 0@a{1@a{1 1@a{1a@aa 0@a{1a}@a{1a} 0@a{,2}@a{,2} 0@a{,}@a{,} 0@a{1,*}@a{1,,,} 2@a{1,x@EBRACE@TO CORRECT 2@a{300}@BADBR@TO CORRECT 2@a{1,0}@BADBR@TO CORRECT 0@ab{0,0}c@abcac 0@ab{0,1}c@abcac 0@ab{0,3}c@abbcac 0@ab{1,1}c@acabc 0@ab{1,3}c@acabc 0@ab{2,2}c@abcabbc 0@ab{2,4}c@abcabbc 2@a**@BADRPT@TO CORRECT 2@a++@BADRPT@TO CORRECT 2@a??@BADRPT@TO CORRECT 2@a*+@BADRPT@TO CORRECT 2@a*?@BADRPT@TO CORRECT 2@a+*@BADRPT@TO CORRECT 2@a+?@BADRPT@TO CORRECT 2@a?*@BADRPT@TO CORRECT 2@a?+@BADRPT@TO CORRECT 2@a{1}{1}@BADRPT@TO CORRECT 2@a*{1}@BADRPT@TO CORRECT 2@a+{1}@BADRPT@TO CORRECT 2@a?{1}@BADRPT@TO CORRECT 2@a{1}*@BADRPT@TO CORRECT 2@a{1}+@BADRPT@TO CORRECT 2@a{1}?@BADRPT@TO CORRECT 0@a*{b}@a{b}@TO CORRECT 0@a[b]c@abc 0@a[ab]c@abc 0@a[^ab]c@adc 0@a[]b]c@a]c 0@a[[b]c@a[c 0@a[-b]c@a-c 0@a[^]b]c@adc 0@a[^-b]c@adc 0@a[b-]c@a-c 2@a[b@EBRACK 2@a[]@EBRACK 0@a[1-3]c@a2c 2@a[3-1]c@ERANGE@TO CORRECT 2@a[1-3-5]c@ERANGE@TO CORRECT 0@a[[.-.]--]c@a-c@TO CORRECT 2@a[1-@ERANGE 2@a[[.@EBRACK 2@a[[.x@EBRACK 2@a[[.x.@EBRACK 2@a[[.x.]@EBRACK@TO CORRECT 0@a[[.x.]]@ax@TO CORRECT 2@a[[.x,.]]@ECOLLATE@TO CORRECT 0@a[[.one.]]b@a1b@TO CORRECT 2@a[[.notdef.]]b@ECOLLATE@TO CORRECT 0@a[[.].]]b@a]b@TO CORRECT 0@a[[:alpha:]]c@abc 2@a[[:notdef:]]c@ECTYPE 2@a[[:@EBRACK 2@a[[:alpha@EBRACK 2@a[[:alpha:]@EBRACK 2@a[[:alpha,:]@ECTYPE 2@a[[:]:]]b@ECTYPE 2@a[[:-:]]b@ECTYPE 2@a[[:alph:]]@ECTYPE 2@a[[:alphabet:]]@ECTYPE 0@[[:digit:]]+@a019b 0@[[:lower:]]+@AabC 0@[[:upper:]]+@aBCd 0@[[:xdigit:]]+@p0f3Cq 0@a[[=b=]]c@abc@TO CORRECT 2@a[[=@EBRACK 2@a[[=b@EBRACK 2@a[[=b=@EBRACK 2@a[[=b=]@EBRACK@TO CORRECT 2@a[[=b,=]]@ECOLLATE@TO CORRECT 0@a[[=one=]]b@a1b@TO CORRECT 0@a(((b)))c@abc 0@a(b|(c))d@abd 0@a(b*|c)d@abbd 0@a[ab]{20}@aaaaabaaaabaaaabaaaab 0@a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab]@aaaaabaaaabaaaabaaaab 0@a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab](wee|week)(knights|night)@aaaaabaaaabaaaabaaaabweeknights 0@12345678901234567890123456789@a12345678901234567890123456789b 0@123456789012345678901234567890@a123456789012345678901234567890b 0@1234567890123456789012345678901@a1234567890123456789012345678901b 0@12345678901234567890123456789012@a12345678901234567890123456789012b 0@123456789012345678901234567890123@a123456789012345678901234567890123b 0@1234567890123456789012345678901234567890123456789012345678901234567890@a1234567890123456789012345678901234567890123456789012345678901234567890b 0@[ab][cd][ef][gh][ij][kl][mn]@xacegikmoq 0@[ab][cd][ef][gh][ij][kl][mn][op]@xacegikmoq 0@[ab][cd][ef][gh][ij][kl][mn][op][qr]@xacegikmoqy 0@[ab][cd][ef][gh][ij][kl][mn][op][q]@xacegikmoqy 0@abc@xabcy 0@aBc@Abc@TO CORRECT 0@a[Bc]*d@abBCcd@TO CORRECT 0@0[[:upper:]]1@0a1@TO CORRECT 0@0[[:lower:]]1@0A1@TO CORRECT 1@a[^b]c@abc 1@a[^b]c@aBc@TO CORRECT 0@a[^b]c@adc 0@[a]b[c]@abc 0@[a]b[a]@aba 0@[abc]b[abc]@abc 0@[abc]b[abd]@abd 0@a(b?c)+d@accd 0@(wee|week)(knights|night)@weeknights 0@(we|wee|week|frob)(knights|night|day)@weeknights 0@a[bc]d@xyzaaabcaababdacd 0@a[ab]c@aaabc 0@a*@b 0@/\*.*\*/@/*x*/ 0@/\*.*\*/@/*x*/y/*z*/ 0@/\*([^*]|\*[^/])*\*/@/*x*/ 0@/\*([^*]|\*[^/])*\*/@/*x*/y/*z*/ 0@/\*([^*]|\*[^/])*\*/@/*x**/y/*z*/ 0@/\*([^*]|\*+[^*/])*\*+/@/*x*/ 0@/\*([^*]|\*+[^*/])*\*+/@/*x*/y/*z*/ 0@/\*([^*]|\*+[^*/])*\*+/@/*x**/y/*z*/ 0@/\*([^*]|\*+[^*/])*\*+/@/*x****/y/*z*/ 0@/\*([^*]|\*+[^*/])*\*+/@/*x**x*/y/*z*/ 0@/\*([^*]|\*+[^*/])*\*+/@/*x***x/y/*z*/ 0@aZb@a@TO CORRECT 0@[[:<:]]a@a@TO CORRECT 1@[[:<:]]a@ba@TO CORRECT 0@[[:<:]]a@-a@TO CORRECT 0@a[[:>:]]@a@TO CORRECT 1@a[[:>:]]@ab@TO CORRECT 0@a[[:>:]]@a-@TO CORRECT 0@[[:<:]]a.c[[:>:]]@axcd-dayc-dazce-abc@TO CORRECT 0@[[:<:]]a.c[[:>:]]@axcd-dayc-dazce-abc-q@TO CORRECT 0@[[:<:]]a.c[[:>:]]@axc-dayc-dazce-abc@TO CORRECT 0@[[:<:]]b.c[[:>:]]@a_bxc-byc_d-bzc-q@TO CORRECT 0@[[:<:]].x..[[:>:]]@y_xa_-_xb_y-_xc_-axdc@TO CORRECT 1@[[:<:]]a_b[[:>:]]@x_a_b@TO CORRECT 0@(A[1])|(A[2])|(A[3])|(A[4])|(A[5])|(A[6])|(A[7])|(A[8])|(A[9])|(A[A])@A1 0@abcdefghijklmnop@abcdefghijklmnop 0@abcdefghijklmnopqrstuv@abcdefghijklmnopqrstuv 0@CC[13]1|a{21}[23][EO][123][Es][12]a{15}aa[34][EW]aaaaaaa[X]a@CC11 0@a?b@ab