-ic a-a a-b a-c a-i aaa aab aac aah aai aar aas aay ab- aba abb abc abh abi abr abs aby ac- aca acb acc ach aci acr acs acy aha ahb ahc ahh ahi ahr ahs ahy ai- aia aib aic aih aii air ais aiy ar- ara arb arc arh ari arr ars ary as- asa asb asc ash asi asr ass asy ay- aya ayc ayh ayi ayr ays baa bab bac bah bai bar bas bay bba bbb bbc bbh bbi bbr bbs bby bca bcb bcc bch bci bcr bcs bcy bha bhb bhc bhh bhi bhr bhs bi- bia bib bic bih bii bir bis biy bra brb brh bri brr brs bry bsa bsb bsc bsh bsi bsr bss bsy by- bya byc byh byi byr bys c-- caa cab cac cah cai car cas cay cba cbb cbc cbh cbi cbr cbs cby cca ccb ccc cch cci ccr ccs ch- cha chb chc chh chi chr chs chy ci- cia cib cic cih cii cir cis cra crb crc crh cri crr crs cry csa csb csc csh csi csr css csy cya cyb cyc cyr cys h-i haa hab hac hah hai har has hay hba hbb hbc hbh hbi hbr hbs hby hca hcb hcc hch hci hcr hcs hcy hha hhb hhc hhh hhi hhr hhs hhy hia hib hic hih hii hir his hr- hra hrb hrc hrh hri hrr hrs hsa hsb hsc hsh hsi hsr hss hsy hy- hya hyb hyc hyh hyi hyr hys hyy ia- iaa iab iac iah iai iar ias iba ibb ibc ibh ibi ibr ibs iby ica icb icc ich ici icr ics icy iha ihb ihc ihh ihi ihr ihs ihy iia iib iic iih iii iir iis ir- ira irb irc iri irr irs iry is- isa isb isc ish isi isr iss isy iya iyc iyr iys iyy ra- raa rab rac rah rai rar ras ray rba rbb rbc rbh rbi rbr rbs rca rcb rcc rch rci rcr rcs rh- rha rhb rhc rhh rhi rhr rhs ria rib ric rih rii rir ris riy rra rrb rrc rrh rri rrr rrs rsa rsb rsc rsh rsi rsr rss ry- rya ryc ryr rys ryy saa sab sac sah sai sar sas say sba sbb sbc sbh sbi sbr sbs sby sca scb scc sch sci scr scs sh- sha shb shc shh shi shr shs shy sia sib sic sih sii sir sis sr- sra srb src srh sri srr srs sry ss- ssa ssb ssc ssh ssi ssr sss sy- sya syb syc syh syi syr sys yaa yab yac yah yai yar yas yay ybc ybi ybr ybs yby yca ycc ych yci ycs ycy yha yhc yhi yhs yih yii yir yis yra yrc yrs ysa ysb ysc ysi ysr yss ysy yyb yyc yys yyy