a-a a-b a-z aaa aab aad aae aag aau aaz ab- aba abb abd abe abg abu abz ad- ada adb add ade adg adu adz aea aeb aed aee aeg aeu aez ag- aga agb agd age agg agu agz au- aua aub aud aue aug auz az- aza azb azd aze azg azu azz b-u baa bab bad bae bag bau baz bba bbb bbd bbe bbg bbu bda bdb bdd bde bdg bdu bdz be- bea beb bed bee beg beu bez bga bgb bgd bge bgg bgu bgz bua bub bud bue bug buu buz bza bzd bze bzu bzz daa dab dad dae dag dau daz dba dbb dbd dbe dbg dbu dbz dda ddb ddd dde ddg ddu ddz de- dea deb ded dee deg deu dez dga dgd dge dgg dgu dgz dua dub dud due dug duz dza dzb dzd dze dzu eaa eab ead eae eag eau eaz eba ebb ebd ebe ebg ebu ed- eda edb edd ede edg edu eea eeb eed eee eeg ega egb egd ege egg egu eu- eua eub eud eue eug eze ezz g-d gaa gab gad gae gag gau gaz gba gbd gbe gbg gbu gbz gda gdb gdd gde gdu ge- gea geb ged gee geg geu gez gga ggb ggd ggg ggu ggz gu- gua gub gud gue gug guu guz gza gzu ua- uaa uab uad uae uag uau uaz uba ubb ube ubg ubu uda udb udd ude udg udu uea ueb ued uee ueg uga ugb uge ugg ugu uua uue uug uuu uza uzb uzu z-g zaa zab zad zag zaz zbb zea zeb zed zee zez zgb zgg zub zud zug zuz zzz