Without Filter

1. BBBB
2. DEDE
3. CFCF
4. KAKA
5. LDLD
6. MEME
7. OFOF

With Filter

1. No Vowels in BBBB
2. DEDE
3. No Vowels in CFCF
4. KAKA
5. No Vowels in LDLD
6. MEME
7. No Vowels in OFOF

Edit in JS Bin