1 aA 2 bB 3 cC 4 dD 5 eE 6 fF 7 gG 8 hH 9 iI 10 lL 11 mM 12 nN 13 oO 14 pP 15 rR 16 sS 17 tT 18 uU 19 wW 20 yY 21 22 23 24 25 26 27 28