-ic a-a a-b a-c a-i a-t aaa aab aac aai aan aar aas aat aay ab- aba abb abc abi abn abr abs abt aby ac- aca acb acc aci acn acr acs act acy ai- aia aib aic aii ain air ais ait aiy an- ana anb anc ani ann anr ans ant any ar- ara arb arc ari arn arr ars art ary as- asa asb asc asi asn asr ass ast asy at- ata atb atc ati atn atr ats att ay- aya ayc ayi ayn ayr ays ayt baa bab bac bai ban bar bas bat bay bba bbb bbc bbi bbn bbr bbs bbt bby bca bcb bcc bci bcn bcr bcs bct bcy bi- bia bib bic bii bin bir bis bit biy bna bnb bnc bni bnn bnr bns bnt bra brb bri brn brr brs brt bry bsa bsb bsc bsi bsn bsr bss bst bsy bta btb btc bti btn btr bts btt bty by- bya byc byi byn byr bys byt c-- caa cab cac cai can car cas cat cay cba cbb cbc cbi cbn cbr cbs cbt cby cca ccb ccc cci ccn ccr ccs cct ci- cia cib cic cii cin cir cis cit cn- cna cnb cnc cni cnn cnr cns cnt cny cra crb crc cri crn crr crs crt cry csa csb csc csi csn csr css cst csy cta ctb ctc cti ctn ctr cts ctt cty cya cyb cyc cyn cyr cys cyt ia- iaa iab iac iai ian iar ias iat iba ibb ibc ibi ibn ibr ibs ibt iby ica icb icc ici icn icr ics ict icy iia iib iic iii iin iir iis iit in- ina inb inc ini inn inr ins int iny ir- ira irb irc iri irn irr irs irt iry is- isa isb isc isi isn isr iss ist isy ita itb itc iti itn its itt ity iya iyc iyr iys iyt iyy n-i naa nab nac nai nan nar nas nat nay nba nbb nbc nbi nbn nbr nbs nbt nca ncb ncc nci ncn ncr ncs nct nia nib nic nii nin nir nis nit nna nnb nnc nni nnn nns nnt nra nrb nrc nri nrn nrr nrs nrt nry nsa nsb nsc nsi nsn nsr nss nst nsy nta ntb ntc nti ntn ntr nts ntt nya nyc nyn nys nyt nyy ra- raa rab rac rai ran rar ras rat ray rba rbb rbc rbi rbn rbr rbs rbt rca rcb rcc rci rcn rcr rcs rct ria rib ric rii rin rir ris rit riy rna rnb rnc rni rnn rnr rns rnt rny rra rrb rrc rri rrn rrr rrs rrt rsa rsb rsc rsi rsn rsr rss rst rta rtb rtc rti rtn rtr rts rtt rty ry- rya ryc ryn ryr rys ryy saa sab sac sai san sar sas sat say sba sbb sbc sbi sbn sbr sbs sbt sby sca scb scc sci scn scr scs sct sia sib sic sii sin sir sis sit sna snb snc sni snn snr sns snt sny sr- sra srb src sri srn srr srs srt sry ss- ssa ssb ssc ssi ssn ssr sss sst sta stb stc sti stn str sts stt sty sy- sya syb syc syi syn syr sys syt taa tab tac tai tan tar tas tat tay tba tbb tbc tbi tbn tbr tbs tbt tca tcb tcc tci tcn tcr tcs tct tia tib tic tii tin tir tis tit tiy tna tnb tnc tni tnn tnr tns tnt tra trb trc tri trn trr trs trt try tsa tsb tsc tsi tsn tsr tss tst tsy tta ttb ttc tti ttn ttr tts ttt tty tya tyc tyn tyr tys tyt yaa yab yac yai yan yar yas yat yay ybc ybi ybr ybs yby yca ycc yci ycs ycy yii yin yir yis yit yna ynn yns yny yra yrc yrn yrs yrt ysa ysb ysc ysi ysr yss yst ysy yta ytc ytn ytr yts ytt yyb yyc yys yyt yyy