-ic a-a a-b a-c a-i a-t aaa aab aac aaf aai aam aao aar aas aat ab- aba abb abc abf abi abm abo abr abs abt ac- aca acb acc acf aci acm aco acr acs act af- afa afb afc aff afi afm afo afr afs aft ai- aia aib aic aif aii aim aio air ais ait ama amb amc amf ami amm amo amr ams amt aoa aob aoc aof aoi aom aoo aor aos aot ar- ara arb arc arf ari arm aro arr ars art as- asa asb asc asf asi asm aso asr ass ast at- ata atb atc atf ati atm ato atr ats att baa bab bac baf bai bam bao bar bas bat bba bbb bbc bbf bbi bbm bbo bbr bbs bbt bca bcb bcc bcf bci bcm bco bcr bcs bct bfa bfb bfc bff bfi bfm bfo bfr bfs bft bi- bia bib bic bif bii bim bio bir bis bit bma bmb bmc bmf bmi bmm bmo bmr bms bmt boa bob boc bof boi bom boo bor bos bot bra brb brf bri brm bro brr brs brt bsa bsb bsc bsf bsi bsm bso bsr bss bst bta btb btc btf bti btm bto btr bts btt c-- caa cab cac caf cai cam cao car cas cat cba cbb cbc cbf cbi cbm cbo cbr cbs cbt cca ccb ccc ccf cci ccm cco ccr ccs cct cfa cfb cfc cff cfi cfm cfo cfr cfs cft ci- cia cib cic cif cii cim cio cir cis cit cma cmb cmc cmf cmi cmm cmo cmr cms cmt co- coa cob coc cof coi com coo cor cos cot cra crb crc crf cri crm cro crr crs crt csa csb csc csf csi csm cso csr css cst cta ctb ctc ctf cti ctm cto ctr cts ctt faa fab fac faf fai fam fao far fas fat fba fbb fbc fbf fbi fbm fbo fbr fbs fbt fca fcb fcc fcf fci fcm fco fcr fcs fct ffa ffc fff ffi ffm ffo ffr ffs fft fia fib fic fif fii fim fir fis fit fma fmb fmc fmf fmi fmm fmo fmr fms fmt foa fob foc fof foi fom foo for fos fot fra frb frc frf fri frm fro frr frs frt fsa fsb fsc fsf fsi fsm fso fsr fss fst fta ftb ftc ftf fti ftm fto ftr fts ftt i-f ia- iaa iab iac iaf iai iam iao iar ias iat iba ibb ibc ibf ibi ibm ibo ibr ibs ibt ica icb icc icf ici icm ico icr ics ict ifa ifb ifc iff ifi ifm ifo ifr ifs ift iia iib iic iif iii iim iio iir iis iit im- ima imb imc imf imi imm imo ims imt io- ioa iob ioc iof ioi iom ioo ior ios iot ir- ira irb irc irf iri irm iro irr irs irt is- isa isb isc isf isi ism iso isr iss ist ita itb itc itf iti itm ito its itt m-f m-o m-r maa mab mac maf mai mam mao mar mas mat mba mbb mbc mbf mbi mbm mbo mbr mbs mbt mc- mca mcb mcc mcf mci mcm mco mcr mcs mct mfa mfb mfc mff mfi mfm mfo mfr mfs mft mi- mia mib mic mif mii mim mio mir mis mit mma mmb mmc mmf mmi mmm mmo mmr mms mmt moa mob moc mof moi mom moo mor mos mot mra mrb mrc mrf mri mrm mro mrr mrs mrt msa msb msc msf msi msm mso msr mss mst mta mtb mtc mtf mti mtm mto mtr mts mtt o-i oaa oab oac oaf oai oam oao oar oas oat ob- oba obb obc obf obi obm obo obr obs obt oc- oca ocb occ ocf oci ocm oco ocr ocs oct of- ofa ofb ofc off ofi ofm ofo ofr ofs oft oia oib oic oif oii oim oio oir ois oit om- oma omb omc omf omi omm omo omr oms omt oo- ooa oob ooc oof ooi oom ooo oor oos oot or- ora orb orc orf ori orm oro orr ors ort os- osa osb osc osf osi osm oso osr oss ost ot- ota otb otc otf oti otm oto otr ots ott ra- raa rab rac raf rai ram rao rar ras rat rba rbb rbc rbf rbi rbm rbo rbr rbs rbt rca rcb rcc rcf rci rcm rco rcr rcs rct rfa rfb rfc rff rfi rfm rfo rfr rfs rft ria rib ric rif rii rim rio rir ris rit rma rmb rmc rmf rmi rmm rmo rmr rms rmt roa rob roc rof roi rom roo ror ros rot rra rrb rrc rrf rri rrm rrr rrs rrt rsa rsb rsc rsf rsi rsm rso rsr rss rst rta rtb rtc rtf rti rtm rto rtr rts rtt saa sab sac saf sai sam sao sar sas sat sba sbb sbc sbf sbi sbm sbo sbr sbs sbt sca scb scc scf sci scm sco scr scs sct sfa sfb sfc sff sfi sfm sfo sfr sfs sft sia sib sic sif sii sim sio sir sis sit sma smb smc smf smi smm smo smr sms smt soa sob soc sof soi som soo sor sos sot sr- sra srb src srf sri srm sro srr srs srt ss- ssa ssb ssc ssf ssi ssm sso ssr sss sst sta stb stc stf sti stm sto str sts stt taa tab tac taf tai tam tao tar tas tat tba tbb tbc tbf tbi tbm tbo tbr tbs tbt tca tcb tcc tcf tci tcm tco tcr tcs tct tfa tfb tfc tff tfi tfm tfo tfr tfs tft tia tib tic tif tii tim tio tir tis tit tma tmb tmc tmf tmi tmm tmo tmr tms tmt to- toa tob toc tof toi