-ic a-a a-b a-c a-i a-t aaa aab aac aai aan aap aar aas aat ab- aba abb abc abi abn abp abr abs abt ac- aca acb acc aci acn acp acr acs act ai- aia aib aic aii ain aip air ais ait an- ana anb anc ani ann anp anr ans ant ap- apa apb apc api apn app apr aps apt ar- ara arb arc ari arn arp arr ars art as- asa asb asc asi asn asp asr ass ast at- ata atb atc ati atn atp atr ats att b-p baa bab bac bai ban bap bar bas bat bba bbb bbc bbi bbn bbp bbr bbs bbt bca bcb bcc bci bcn bcp bcr bcs bct bi- bia bib bic bii bin bip bir bis bit bna bnb bnc bni bnn bnp bnr bns bnt bpa bpb bpc bpi bpn bpp bpr bps bpt bra brb bri brn brp brr brs brt bsa bsb bsc bsi bsn bsp bsr bss bst bta btb btc bti btn btp btr bts btt c-- caa cab cac cai can cap car cas cat cba cbb cbc cbi cbn cbp cbr cbs cbt cca ccb ccc cci ccn ccp ccr ccs cct ci- cia cib cic cii cin cip cir cis cit cn- cna cnb cnc cni cnn cnp cnr cns cnt cpa cpb cpc cpi cpn cpp cpr cps cpt cra crb crc cri crn crp crr crs crt csa csb csc csi csn csp csr css cst cta ctb ctc cti ctn ctp ctr cts ctt ia- iaa iab iac iai ian iap iar ias iat iba ibb ibc ibi ibn ibp ibr ibs ibt ica icb icc ici icn icp icr ics ict iia iib iic iii iin iip iir iis iit in- ina inb inc ini inn inp inr ins int ipa ipb ipc ipi ipn ipp ipr ips ipt ir- ira irb irc iri irn irp irr irs irt is- isa isb isc isi isn isp isr iss ist ita itb itc iti itn itp its itt n-i naa nab nac nai nan nap nar nas nat nba nbb nbc nbi nbn nbp nbr nbs nbt nca ncb ncc nci ncn ncp ncr ncs nct nia nib nic nii nin nip nir nis nit nna nnb nnc nni nnn nnp nns nnt npa npb npc npi npn npp npr nps npt nra nrb nrc nri nrn nrp nrr nrs nrt nsa nsb nsc nsi nsn nsp nsr nss nst nta ntb ntc nti ntn ntp ntr nts ntt p-p paa pab pac pai pan pap par pas pat pba pbb pbc pbi pbn pbp pbr pbs pbt pca pcb pcc pci pcn pcp pcr pcs pct pia pib pic pii pin pip pir pis pit pn- pna pnb pnc pni pnn pnp pnr pns pnt ppa ppb ppc ppi ppn ppp ppr pps ppt pra prb prc pri prn prp prr prs prt ps- psa psb psc psi psn psp psr pss pst pt- pta ptb ptc pti ptn ptp ptr pts ptt ra- raa rab rac rai ran rap rar ras rat rba rbb rbc rbi rbn rbp rbr rbs rbt rca rcb rcc rci rcn rcp rcr rcs rct ria rib ric rii rin rip rir ris rit rna rnb rnc rni rnn rnp rnr rns rnt rpa rpb rpc rpi rpn rpp rpr rps rpt rra rrb rrc rri rrn rrp rrr rrs rrt rsa rsb rsc rsi rsn rsp rsr rss rst rta rtb rtc rti rtn rtp rtr rts rtt saa sab sac sai san sap sar sas sat sba sbb sbc sbi sbn sbp sbr sbs sbt sca scb scc sci scn scp scr scs sct sia sib sic sii sin sip sir sis sit sna snb snc sni snn snp snr sns snt spa spb spc spi spn spp spr sps spt sr- sra srb src sri srn srp srr srs srt ss- ssa ssb ssc ssi ssn ssp ssr sss sst sta stb stc sti stn stp str sts stt taa tab tac tai tan tap tar tas tat tba tbb tbc tbi tbn tbp tbr tbs tbt tca tcb tcc tci tcn tcp tcr tcs tct tia tib tic tii tin tip tir tis tit tna tnb tnc tni tnn tnp tnr tns tnt tpa tpb tpc tpi tpn tpp tpr tps tpt tra trb trc tri trn trp trr trs trt tsa tsb tsc tsi tsn tsp tsr tss tst tta ttb ttc tti ttn ttp ttr tts ttt