diff --git a/randx/sequence.go b/randx/sequence.go
index f3fc5450..0b0163ac 100644
--- a/randx/sequence.go
+++ b/randx/sequence.go
@@ -21,6 +21,10 @@ var (
 	AlphaUpperNum = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 	// AlphaLower contains runes [abcdefghijklmnopqrstuvwxyz].
 	AlphaLower = []rune("abcdefghijklmnopqrstuvwxyz")
+	// AlphaUpperVowels contains runes [AEIOUY].
+	AlphaUpperVowels = []rune("AEIOUY")
+	// AlphaUpperNoVowels contains runes [BCDFGHJKLMNPQRSTVWXZ].
+	AlphaUpperNoVowels = []rune("BCDFGHJKLMNPQRSTVWXZ")
 	// AlphaUpper contains runes [ABCDEFGHIJKLMNOPQRSTUVWXYZ].
 	AlphaUpper = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZ")
 	// Numeric contains runes [0123456789].
diff --git a/randx/sequence_test.go b/randx/sequence_test.go
index c4d4bf97..7131fa01 100644
--- a/randx/sequence_test.go
+++ b/randx/sequence_test.go
@@ -18,6 +18,8 @@ func TestRunePatterns(t *testing.T) {
 		{Alpha, "[a-zA-Z]{52}"},
 		{AlphaLower, "[a-z]{26}"},
 		{AlphaUpper, "[A-Z]{26}"},
+		{AlphaUpperVowels, "[AEIOUY]{6}"},
+		{AlphaUpperNoVowels, "[^AEIOUY]{20}"},
 		{AlphaNum, "[a-zA-Z0-9]{62}"},
 		{AlphaLowerNum, "[a-z0-9]{36}"},
 		{AlphaUpperNum, "[A-Z0-9]{36}"},
@@ -38,6 +40,8 @@ func TestRuneSequenceMatchesPattern(t *testing.T) {
 		{Alpha, "[a-zA-Z]+", 25},
 		{AlphaLower, "[a-z]+", 46},
 		{AlphaUpper, "[A-Z]+", 21},
+		{AlphaUpperVowels, "[AEIOUY]+", 12},
+		{AlphaUpperNoVowels, "[^AEIOUY]+", 42},
 		{AlphaNum, "[a-zA-Z0-9]+", 123},
 		{AlphaLowerNum, "[a-z0-9]+", 41},
 		{AlphaUpperNum, "[A-Z0-9]+", 94914},