-er a-a a-b a-i a-t a-z aaa aab aae aag aai aar aat aau aaz ab- aba abb abe abg abi abr abt abu abz aea aeb aee aeg aei aer aet aeu aez ag- aga agb age agg agi agr agt agu agz ai- aia aib aie aig aii air ait aiu aiz ar- ara arb are arg ari arr art aru arz at- ata atb ate atg ati atr att atu atz au- aua aub aue aug aui aur aut auz az- aza azb aze azg azi azt azu azz b-u baa bab bae bag bai bar bat bau baz bba bbb bbe bbg bbi bbr bbt bbu be- bea beb bee beg bei ber bet beu bez bga bgb bge bgg bgi bgr bgt bgu bgz bi- bia bib bie big bii bir bit biu biz bra brb bre brg bri brr brt bru brz bta btb bte btg bti btr btt btu btz bua bub bue bug bui bur but buu buz bza bze bzr bzu bzz eaa eab eae eag eai ear eat eau eaz eba ebb ebe ebg ebi ebr ebt ebu eea eeb eee eeg eer eet ega egb ege egg egi egr egt egu eia eib eie eig eii eir eit eiu era erb ere erg eri err ert eru erz eta etb ete etg eti etr ett etu etz eu- eua eub eue eug eui eur eut eze ezr ezz gaa gab gae gag gai gar gat gau gaz gba gbe gbg gbi gbr gbt gbu gbz ge- gea geb gee geg gei ger get geu gez gga ggb ggg ggi ggr ggt ggu ggz gia gib gie gig gii gir git giu giz gra grb gre grg gri grr grt gru gta gtb gte gtg gti gtr gtt gtu gu- gua gub gue gug gui gur gut guu guz gza gzr gzu ia- iaa iab iae iag iai iar iat iau iaz iba ibb ibe ibg ibi ibr ibt ibu ibz ie- iea iee ieg iei ier iet iga igb ige igg igi igr igt igu iia iib iie iii iir iit iiu ir- ira irb ire irg iri irr irt iru ita itb ite itg iti itt itu itz iu- iua iub iue iug iui iur iut iuz iza ize izi izu izz ra- raa rab rae rag rai rar rat rau raz rba rbb rbe rbg rbi rbr rbt rbu re- rea reb ree reg rei rer ret reu rez rga rgb rge rgg rgi rgr rgt ria rib rie rig rii rir rit riz rra rrb rrg rri rrr rrt rru rta rtb rte rtg rti rtr rtt rtu rtz rua rub rue rug rui rur rut ruu ruz rza rzb rze taa tab tae tag tai tar tat tau taz tba tbb tbe tbg tbi tbr tbt tbu tbz te- tea teb tee teg tei ter tet teu tez tga tgb tge tgg tgi tgr tgt tgu tgz tia tib tie tig tii tir tit tiu tiz tra trb tre trg tri trr trt tru trz tta ttb tte ttg tti ttr ttt ttu tua tub tue tug tui tur tut tuu tuz tza tze tzu ua- uaa uab uae uag uai uar uat uau uaz uba ubb ube ubg ubi ubr ubt ubu uea ueb uee ueg uei uer uet uga ugb uge ugg ugi ugr ugt ugu uia uib uie uig uii uir uit uiu ur- ura urb ure urg uri urr urt uru urz uta utb ute uti utr utt utu utz uua uue uug uur uut uuu uza uzb uzi uzu z-g zaa zab zag zai zar zat zaz zbb zbr zbt zea zeb zee zer zet zez zgb zgg zgi zia zib zie zig zir zit ziz zta zte ztr zub zug zui zur zut zuz zzr zzt zzz