diff --git a/re_test.go b/re_test.go
index f60d778..bfcf160 100644
--- a/re_test.go
+++ b/re_test.go
@@ -21,9 +21,9 @@ var reTests = []struct {
 	{"ab*", "abb", []matchIndex{{0, 3}}},
 	{"a*b", "aaab", []matchIndex{{0, 4}}},
 	{"a*b", "qwqw", []matchIndex{}},
-	{"(abc)*", "abcabcabc", []matchIndex{{0, 9}}},
-	{"((abc)|(def))*", "abcdef", []matchIndex{{0, 6}}},
-	{"(abc)*|(def)*", "abcdef", []matchIndex{{0, 3}, {3, 3}, {3, 6}, {6, 6}}},
+	{"(abc)*", "abcabcabc", []matchIndex{{0, 9}, {9, 9}}},
+	{"((abc)|(def))*", "abcdef", []matchIndex{{0, 6}, {6, 6}}},
+	{"(abc)*|(def)*", "abcdef", []matchIndex{{0, 3}, {3, 6}, {6, 6}}},
 	{"b*a*a", "bba", []matchIndex{{0, 3}}},
 	{"(ab)+", "abcabddd", []matchIndex{{0, 2}, {3, 5}}},
 	{"a(b(c|d)*)*", "abccbd", []matchIndex{{0, 6}}},
@@ -38,8 +38,8 @@ var reTests = []struct {
 	{"a?b", "ab", []matchIndex{{0, 2}}},
 	{"a?", "", []matchIndex{{0, 0}}},
 	{"a?b?c", "a", []matchIndex{}},
-	{"a?b?c?", "ab", []matchIndex{{0, 2}}},
-	{"a?b?c?", "ac", []matchIndex{{0, 2}}},
+	{"a?b?c?", "ab", []matchIndex{{0, 2}, {2, 2}}},
+	{"a?b?c?", "ac", []matchIndex{{0, 2}, {2, 2}}},
 	{"a?b?c", "abc", []matchIndex{{0, 3}}},
 	{"a?b?c", "acb", []matchIndex{{0, 2}}},
 
@@ -49,7 +49,7 @@ var reTests = []struct {
 	{"g[ab]c", "gbc", []matchIndex{{0, 3}}},
 	{"g[ab]c", "gc", []matchIndex{}},
 	{"g[ab]c", "gfc", []matchIndex{}},
-	{"[ab]*", "aabbbabaababab", []matchIndex{{0, 14}}},
+	{"[ab]*", "aabbbabaababab", []matchIndex{{0, 14}, {14, 14}}},
 	{"[ab]+", "aabbbablaababab", []matchIndex{{0, 7}, {8, 15}}},
 	{"[Ff]r[Uu]it", "fruit", []matchIndex{{0, 5}}},
 	{"[Ff]r[Uu]it", "FrUit", []matchIndex{{0, 5}}},
@@ -78,6 +78,15 @@ var reTests = []struct {
 	{"[^0-9]+", "a1b2c3dd", []matchIndex{{0, 1}, {2, 3}, {4, 5}, {6, 8}}},
 	{"[^abc]+", "ababababbababaccacacacaca", []matchIndex{}},
 	{`\([^)]+\)`, "Not (paranthesized), (so) is (this) not", []matchIndex{{4, 19}, {21, 25}, {29, 35}}},
+
+	{"^ab", "ab bab", []matchIndex{{0, 2}}},
+	{"^aaaa^", "aaaaaaaa", []matchIndex{}},
+	{"^([bB][Gg])", "bG", []matchIndex{{0, 2}}},
+	{"b$", "ba", []matchIndex{}},
+	{"(boy|girl)$", "girlf", []matchIndex{}},
+	{`\bint\b`, "print int integer", []matchIndex{{6, 9}}},
+	{`int(\b|a)`, "inta", []matchIndex{{0, 4}}},
+	{`\b\d+\b`, "511 a3 43", []matchIndex{{0, 3}, {7, 9}}},
 }
 
 func TestFindAllMatches(t *testing.T) {