-ic a-a a-b a-c a-i a-t aaa aab aac aai aan aao aap aar aas aat ab- aba abb abc abi abn abo abp abr abs abt ac- aca acb acc aci acn aco acp acr acs act ai- aia aib aic aii ain aio aip air ais ait an- ana anb anc ani ann ano anp anr ans ant aoa aob aoc aoi aon aoo aop aor aos aot ap- apa apb apc api apn apo app apr aps apt ar- ara arb arc ari arn aro arp arr ars art as- asa asb asc asi asn aso asp asr ass ast at- ata atb atc ati atn ato atp atr ats att b-p baa bab bac bai ban bao bap bar bas bat bba bbb bbc bbi bbn bbo bbp bbr bbs bbt bca bcb bcc bci bcn bco bcp bcr bcs bct bi- bia bib bic bii bin bio bip bir bis bit bna bnb bnc bni bnn bno bnp bnr bns bnt boa bob boc boi bon boo bop bor bos bot bpa bpb bpc bpi bpn bpo bpp bpr bps bpt bra brb bri brn bro brp brr brs brt bsa bsb bsc bsi bsn bso bsp bsr bss bst bta btb btc bti btn bto btp btr bts btt c-- caa cab cac cai can cao cap car cas cat cba cbb cbc cbi cbn cbo cbp cbr cbs cbt cca ccb ccc cci ccn cco ccp ccr ccs cct ci- cia cib cic cii cin cio cip cir cis cit cn- cna cnb cnc cni cnn cno cnp cnr cns cnt co- coa cob coc coi con coo cop cor cos cot cpa cpb cpc cpi cpn cpo cpp cpr cps cpt cra crb crc cri crn cro crp crr crs crt csa csb csc csi csn cso csp csr css cst cta ctb ctc cti ctn cto ctp ctr cts ctt ia- iaa iab iac iai ian iao iap iar ias iat iba ibb ibc ibi ibn ibo ibp ibr ibs ibt ica icb icc ici icn ico icp icr ics ict iia iib iic iii iin iio iip iir iis iit in- ina inb inc ini inn ino inp inr ins int io- ioa iob ioc ioi ion ioo iop ior ios iot ipa ipb ipc ipi ipn ipo ipp ipr ips ipt ir- ira irb irc iri irn iro irp irr irs irt is- isa isb isc isi isn iso isp isr iss ist ita itb itc iti itn ito itp its itt n-i naa nab nac nai nan nao nap nar nas nat nba nbb nbc nbi nbn nbo nbp nbr nbs nbt nca ncb ncc nci ncn nco ncp ncr ncs nct nia nib nic nii nin nio nip nir nis nit nna nnb nnc nni nnn nno nnp nns nnt no- noa nob noc noi non noo nop nor nos not npa npb npc npi npn npo npp npr nps npt nra nrb nrc nri nrn nro nrp nrr nrs nrt nsa nsb nsc nsi nsn nso nsp nsr nss nst nta ntb ntc nti ntn nto ntp ntr nts ntt o-i oaa oab oac oai oan oao oap oar oas oat ob- oba obb obc obi obn obo obp obr obs obt oc- oca ocb occ oci ocn oco ocp ocr ocs oct oia oib oic oii oin oio oip oir ois oit on- ona onb onc oni onn ono onp onr ons ont oo- ooa oob ooc ooi oon ooo oop oor oos oot op- opa opb opc opi opn opo opp opr ops opt or- ora orb orc ori orn oro orp orr ors ort os- osa osb osc osi osn oso osp osr oss ost ot- ota otb otc oti otn oto otp otr ots ott p-p paa pab pac pai pan pao pap par pas pat pba pbb pbc pbi pbn pbo pbp pbr pbs pbt pca pcb pcc pci pcn pco pcp pcr pcs pct pia pib pic pii pin pio pip pir pis pit pn- pna pnb pnc pni pnn pno pnp pnr pns pnt poa pob poc poi pon poo pop por pos pot ppa ppb ppc ppi ppn ppo ppp ppr pps ppt pra prb prc pri prn pro prp prr prs prt ps- psa psb psc psi psn pso psp psr pss pst pt- pta ptb ptc pti ptn pto ptp ptr pts ptt ra- raa rab rac rai ran rao rap rar ras rat rba rbb rbc rbi rbn rbo rbp rbr rbs rbt rca rcb rcc rci rcn rco rcp rcr rcs rct ria rib ric rii rin rio rip rir ris rit rna rnb rnc rni rnn rno rnp rnr rns rnt roa rob roc roi ron roo rop ror ros rot rpa rpb rpc rpi rpn rpo rpp rpr rps rpt rra rrb rrc rri rrn rrp rrr rrs rrt rsa rsb rsc rsi rsn rso rsp rsr rss rst rta rtb rtc rti rtn rto rtp rtr rts rtt saa sab sac sai san sao sap sar sas sat sba sbb sbc sbi sbn sbo sbp sbr sbs sbt sca scb scc sci scn sco scp scr scs sct sia sib sic sii sin sio sip sir sis sit sna snb snc sni snn sno snp snr sns snt soa sob soc soi son soo sop sor sos sot spa spb spc spi spn spo spp spr sps spt sr- sra srb src sri srn sro srp srr srs srt ss- ssa ssb ssc ssi ssn sso ssp ssr sss sst sta stb stc sti stn sto stp str sts stt taa tab tac tai tan tao tap tar tas tat tba tbb tbc tbi tbn tbo tbp tbr tbs tbt tca tcb tcc tci tcn tco tcp tcr tcs tct tia tib tic tii tin tio tip tir tis tit tna tnb tnc tni tnn tno tnp tnr tns tnt to- toa tob toc toi ton too top tor tos tot