-ic a-a a-b a-c a-i a-t aaa aab aac aag aai aan aao aar aat aau ab- aba abb abc abg abi abn abo abr abt abu ac- aca acb acc acg aci acn aco acr act acu ag- aga agb agc agg agi agn ago agr agt agu ai- aia aib aic aig aii ain aio air ait aiu an- ana anb anc ang ani ann ano anr ant anu aoa aob aoc aog aoi aon aoo aor aot aou ar- ara arb arc arg ari arn aro arr art aru at- ata atb atc atg ati atn ato atr att atu au- aua aub auc aug aui aun auo aur aut b-u baa bab bac bag bai ban bao bar bat bau bba bbb bbc bbg bbi bbn bbo bbr bbt bbu bca bcb bcc bcg bci bcn bco bcr bct bcu bga bgb bgc bgg bgi bgn bgo bgr bgt bgu bi- bia bib bic big bii bin bio bir bit biu bna bnb bnc bng bni bnn bno bnr bnt bnu boa bob boc bog boi bon boo bor bot bou bra brb brg bri brn bro brr brt bru bta btb btc btg bti btn bto btr btt btu bua bub buc bug bui bun buo bur but buu c-- caa cab cac cag cai can cao car cat cau cba cbb cbc cbg cbi cbn cbo cbr cbt cbu cca ccb ccc ccg cci ccn cco ccr cct ccu cga cgb cgc cgg cgi cgn cgo cgr cgt cgu ci- cia cib cic cig cii cin cio cir cit ciu cn- cna cnb cnc cng cni cnn cno cnr cnt cnu co- coa cob coc cog coi con coo cor cot cou cra crb crc crg cri crn cro crr crt cru cta ctb ctc ctg cti ctn cto ctr ctt ctu cua cub cuc cug cui cun cuo cur cut cuu gaa gab gac gag gai gan gao gar gat gau gba gbc gbg gbi gbn gbo gbr gbt gbu gca gcb gcc gcg gci gcn gco gcr gct gcu gga ggb ggc ggg ggi ggn ggo ggr ggt ggu gia gib gic gig gii gin gio gir git giu gna gnb gnc gni gnn gno gnr gnt gnu goa gob goc gog goi gon goo gor got gou gra grb grc grg gri grn gro grr grt gru gta gtb gtc gtg gti gtn gto gtr gtt gtu gu- gua gub guc gug gui gun guo gur gut guu ia- iaa iab iac iag iai ian iao iar iat iau iba ibb ibc ibg ibi ibn ibo ibr ibt ibu ica icb icc icg ici icn ico icr ict icu iga igb igc igg igi ign igo igr igt igu iia iib iic iii iin iio iir iit iiu in- ina inb inc ing ini inn ino inr int inu io- ioa iob ioc iog ioi ion ioo ior iot iou ir- ira irb irc irg iri irn iro irr irt iru ita itb itc itg iti itn ito itt itu iu- iua iub iuc iug iui iur iut n-i naa nab nac nag nai nan nao nar nat nau nba nbb nbc nbg nbi nbn nbo nbr nbt nbu nca ncb ncc ncg nci ncn nco ncr nct ncu nga ngb ngc ngg ngi ngn ngo ngt ngu nia nib nic nig nii nin nio nir nit niu nna nnb nnc nng nni nnn nno nnt nnu no- noa nob noc nog noi non noo nor not nou nra nrb nrc nrg nri nrn nro nrr nrt nru nta ntb ntc ntg nti ntn nto ntr ntt ntu nua nub nuc nug nui nun nuo nur nut nuu o-i oaa oab oac oag oai oan oao oar oat oau ob- oba obb obc obg obi obn obo obr obt obu oc- oca ocb occ ocg oci ocn oco ocr oct ocu oga ogc ogg ogi ogn ogo ogt oia oib oic oii oin oio oir oit oiu on- ona onb onc ong oni onn ono onr ont onu oo- ooa oob ooc oog ooi oon ooo oor oot or- ora orb orc org ori orn oro orr ort oru ot- ota otb otc otg oti otn oto otr ott otu ou- oua ouc oui oun ouo our out ra- raa rab rac rag rai ran rao rar rat rau rba rbb rbc rbg rbi rbn rbo rbr rbt rbu rca rcb rcc rcg rci rcn rco rcr rct rcu rga rgb rgc rgg rgi rgn rgo rgr rgt ria rib ric rig rii rin rio rir rit rna rnb rnc rng rni rnn rno rnr rnt rnu roa rob roc rog roi ron roo ror rot rou rra rrb rrc rrg rri rrn rrr rrt rru rta rtb rtc rtg rti rtn rto rtr rtt rtu rua rub ruc rug rui run ruo rur rut ruu taa tab tac tag tai tan tao tar tat tau tba tbb tbc tbg tbi tbn tbo tbr tbt tbu tca tcb tcc tcg tci tcn tco tcr tct tcu tga tgb tgc tgg tgi tgn tgo tgr tgt tgu tia tib tic tig tii tin tio tir tit tiu tna tnb tnc tng tni tnn tno tnr tnt to- toa tob toc tog toi ton too tor tot tou tra trb trc trg tri trn tro trr trt tru tta ttb ttc ttg tti ttn tto ttr ttt ttu tua tub tuc tug tui tun tuo tur tut tuu ua- uaa uab uac uag uai uan uao uar uat uau uba ubb ubc ubg ubi ubn ubo ubr ubt ubu uca ucb ucc ucg uci ucn uco ucr uct ucu uga ugb ugc ugg ugi ugn ugo ugr ugt ugu uia uib uic uig uii uin uio uir uit uiu un- una unb unc ung uni unn uno unr unt unu uoa uob uoc uog uon uoo uor uot ur- ura urb urc urg uri urn uro urr urt uru uta utb utc uti