a-a a-b a-t a-z aaa aab aao aat aaw aay aaz ab- aba abb abo abt abw aby abz aoa aob aoo aot aow at- ata atb ato att atw atz aw- awa awb awo awt aww awy ay- aya ayo ayt ayw ayz az- aza azb azo azt azw azy azz baa bab bao bat baw bay baz bba bbb bbo bbt bbw bby boa bob boo bot bow boy boz bta btb bto btt btw bty btz bwa bwb bwo bwy by- bya byo byt byz bza bzo bzz oaa oab oao oat oaw ob- oba obb obo obt obw oby oo- ooa oob ooo oot oow ot- ota otb oto ott otw otz owa owb owo owt oww oya oyo oza ozo ozt ozw ozz taa tab tao tat taw tay taz tba tbb tbo tbt tbz to- toa tob too tot tow toy toz tta ttb tto ttt ttw tty twa twb two twt tww twy tya tyo tyt tza waa wab wao wat waw way waz wba wbb wbo wbt wbw wbz woa wob woo wot wow woy woz wta wtb wto wtt wtw wtz wwa wwo wwt www wy- wya wyo wyt wzt yaa yab yao yat yaw yay yaz yby ybz yob yoo yot yow yoy yta yto ytt yyb yyt yyy yyz yzb yzy zaa zab zao zat zay zaz zbb zbt zbw zby zo- zoa zob zoo zot zow zta zzt zzy zzz