a aa aaa aaaa b bb bbb bbbb c cc ccc cccc d dd ddd dddd e ee eee eeee f ff fff ffff g gg ggg gggg h hh hhh hhhh i ii iii iiii j jj jjj jjjj jjjjj jjjjjj k kk kkk kkkk kkkkk kkkkkk l ll lll llll lllll llllll m mm mmm mmmm mmmmm mmmmmm n nn nnn nnnn nnnnn nnnnnn o oo ooo oooo ooooo oooooo p pp ppp pppp ppppp pppppp q qq qqq qqqq qqqqq qqqqqq r rr rrr rrrr rrrrrr rrrrrrr s ss sss ssss sssss ssssss t tt ttt tttt ttttt tttttt u uu uuu uuuu uuuuu uuuuuu v vv vvv vvvv vvvvv vvvvvv w ww www wwww wwwww wwwwww x xx xxx xxxx xxxxx xxxxxx xxxxxxx xxxxxxxxxxx xxxxxxxxxxxxxxxx y yy yyy yyyy yyyyy yyyyyy yyyyyyy yyyyyyyy yyyyyyyyy yyyyyyyyyyyyyy z zz zzz zzzz zzzzz zzzzzz zzzzzzzzzz