-ic a-a a-b a-c a-i a-t aaa aab aac aai aao aap aar aas aat aay ab- aba abb abc abi abo abp abr abs abt aby ac- aca acb acc aci aco acp acr acs act acy ai- aia aib aic aii aio aip air ais ait aiy aoa aob aoc aoi aoo aop aor aos aot ap- apa apb apc api apo app apr aps apt apy ar- ara arb arc ari aro arp arr ars art ary as- asa asb asc asi aso asp asr ass ast asy at- ata atb atc ati ato atp atr ats att ay- aya ayc ayi ayo ayp ayr ays ayt b-p baa bab bac bai bao bap bar bas bat bay bba bbb bbc bbi bbo bbp bbr bbs bbt bby bca bcb bcc bci bco bcp bcr bcs bct bcy bi- bia bib bic bii bio bip bir bis bit biy boa bob boc boi boo bop bor bos bot boy bpa bpb bpc bpi bpo bpp bpr bps bpt bpy bra brb bri bro brp brr brs brt bry bsa bsb bsc bsi bso bsp bsr bss bst bsy bta btb btc bti bto btp btr bts btt bty by- bya byc byi byo byp byr bys byt c-- caa cab cac cai cao cap car cas cat cay cba cbb cbc cbi cbo cbp cbr cbs cbt cby cca ccb ccc cci cco ccp ccr ccs cct ci- cia cib cic cii cio cip cir cis cit co- coa cob coc coi coo cop cor cos cot coy cpa cpb cpc cpi cpo cpp cpr cps cpt cra crb crc cri cro crp crr crs crt cry csa csb csc csi cso csp csr css cst csy cta ctb ctc cti cto ctp ctr cts ctt cty cya cyb cyc cyo cyp cyr cys cyt ia- iaa iab iac iai iao iap iar ias iat iba ibb ibc ibi ibo ibp ibr ibs ibt iby ica icb icc ici ico icp icr ics ict icy iia iib iic iii iio iip iir iis iit io- ioa iob ioc ioi ioo iop ior ios iot ipa ipb ipc ipi ipo ipp ipr ips ipt ipy ir- ira irb irc iri iro irp irr irs irt iry is- isa isb isc isi iso isp isr iss ist isy ita itb itc iti ito itp its itt ity iya iyc iyo iyr iys iyt iyy o-i oaa oab oac oai oao oap oar oas oat ob- oba obb obc obi obo obp obr obs obt oby oc- oca ocb occ oci oco ocp ocr ocs oct oia oib oic oii oio oip oir ois oit oo- ooa oob ooc ooi ooo oop oor oos oot op- opa opb opc opi opo opp opr ops opt opy or- ora orb orc ori oro orp orr ors ort ory os- osa osb osc osi oso osp osr oss ost ot- ota otb otc oti oto otp otr ots ott oya oyi oyo oys p-p paa pab pac pai pao pap par pas pat pay pba pbb pbc pbi pbo pbp pbr pbs pbt pby pca pcb pcc pci pco pcp pcr pcs pct pia pib pic pii pio pip pir pis pit poa pob poc poi poo pop por pos pot poy ppa ppb ppc ppi ppo ppp ppr pps ppt pra prb prc pri pro prp prr prs prt pry ps- psa psb psc psi pso psp psr pss pst psy pt- pta ptb ptc pti pto ptp ptr pts ptt pty py- pya pyb pyc pyo pyr pys pyt ra- raa rab rac rai rao rap rar ras rat ray rba rbb rbc rbi rbo rbp rbr rbs rbt rca rcb rcc rci rco rcp rcr rcs rct ria rib ric rii rio rip rir ris rit riy roa rob roc roi roo rop ror ros rot roy rpa rpb rpc rpi rpo rpp rpr rps rpt rra rrb rrc rri rrp rrr rrs rrt rsa rsb rsc rsi rso rsp rsr rss rst rta rtb rtc rti rto rtp rtr rts rtt rty ry- rya ryc ryo ryr rys ryy saa sab sac sai sao sap sar sas sat say sba sbb sbc sbi sbo sbp sbr sbs sbt sby sca scb scc sci sco scp scr scs sct sia sib sic sii sio sip sir sis sit soa sob soc soi soo sop sor sos sot soy spa spb spc spi spo spp spr sps spt spy sr- sra srb src sri sro srp srr srs srt sry ss- ssa ssb ssc ssi sso ssp ssr sss sst sta stb stc sti sto stp str sts stt sty sy- sya syb syc syi syp syr sys syt taa tab tac tai tao tap tar tas tat tay tba tbb tbc tbi tbo tbp tbr tbs tbt tca tcb tcc tci tco tcp tcr tcs tct tia tib tic tii tio tip tir tis tit tiy to- toa tob toc toi too top tor tos tot toy tpa tpb tpc tpi tpo tpp tpr tps tpt tra trb trc tri tro trp trr trs trt try tsa tsb tsc tsi tso tsp tsr tss tst tsy tta ttb ttc tti tto ttp ttr tts ttt tty tya tyc tyo typ tyr tys tyt yaa yab yac yai yao yap yar yas yat yay ybc ybi ybp ybr ybs yby yca ycc yci yco ycp ycs ycy yii yio yip yir yis yit yob yoc yoi yoo yop yor yos yot yoy ypa ypo yps yra yrc yro yrp yrs yrt ysa ysb ysc ysi yso ysp ysr yss yst ysy yta ytc yto ytp ytr yts ytt yyb yyc yys yyt yyy