-ic a-a a-b a-c a-i aaa aab aac aaf aai aam aao aar aas aau ab- aba abb abc abf abi abm abo abr abs abu ac- aca acb acc acf aci acm aco acr acs acu af- afa afb afc aff afi afm afo afr afs afu ai- aia aib aic aif aii aim aio air ais aiu ama amb amc amf ami amm amo amr ams amu aoa aob aoc aof aoi aom aoo aor aos aou ar- ara arb arc arf ari arm aro arr ars aru as- asa asb asc asf asi asm aso asr ass asu au- aua aub auc auf aui aum auo aur aus b-u baa bab bac baf bai bam bao bar bas bau bba bbb bbc bbf bbi bbm bbo bbr bbs bbu bca bcb bcc bcf bci bcm bco bcr bcs bcu bfa bfb bfc bff bfi bfm bfo bfr bfs bfu bi- bia bib bic bif bii bim bio bir bis biu bma bmb bmc bmf bmi bmm bmo bmr bms bmu boa bob boc bof boi bom boo bor bos bou bra brb brf bri brm bro brr brs bru bsa bsb bsc bsf bsi bsm bso bsr bss bsu bua bub buc buf bui bum buo bur bus buu c-- caa cab cac caf cai cam cao car cas cau cba cbb cbc cbf cbi cbm cbo cbr cbs cbu cca ccb ccc ccf cci ccm cco ccr ccs ccu cfa cfb cfc cff cfi cfm cfo cfr cfs cfu ci- cia cib cic cif cii cim cio cir cis ciu cma cmb cmc cmf cmi cmm cmo cmr cms cmu co- coa cob coc cof coi com coo cor cos cou cra crb crc crf cri crm cro crr crs cru csa csb csc csf csi csm cso csr css csu cua cub cuc cuf cui cum cuo cur cus cuu faa fab fac faf fai fam fao far fas fau fba fbb fbc fbf fbi fbm fbo fbr fbs fbu fca fcb fcc fcf fci fcm fco fcr fcs fcu ffa ffc fff ffi ffm ffo ffr ffs ffu fia fib fic fif fii fim fir fis fiu fma fmb fmc fmf fmi fmm fmo fmr fms fmu foa fob foc fof foi fom foo for fos fou fra frb frc frf fri frm fro frr frs fru fsa fsb fsc fsf fsi fsm fso fsr fss fsu fua fub fuf fui fum fuo fur fus fuu i-f ia- iaa iab iac iaf iai iam iao iar ias iau iba ibb ibc ibf ibi ibm ibo ibr ibs ibu ica icb icc icf ici icm ico icr ics icu ifa ifb ifc iff ifi ifm ifo ifr ifs ifu iia iib iic iif iii iim iio iir iis iiu im- ima imb imc imf imi imm imo ims imu io- ioa iob ioc iof ioi iom ioo ior ios iou ir- ira irb irc irf iri irm iro irr irs iru is- isa isb isc isf isi ism iso isr iss isu iu- iua iub iuc iui ium iur ius m-f m-o m-r maa mab mac maf mai mam mao mar mas mau mba mbb mbc mbf mbi mbm mbo mbr mbs mbu mc- mca mcb mcc mcf mci mcm mco mcr mcs mcu mfa mfb mfc mff mfi mfm mfo mfr mfs mfu mi- mia mib mic mif mii mim mio mir mis miu mma mmb mmc mmf mmi mmm mmo mmr mms mmu moa mob moc mof moi mom moo mor mos mou mra mrb mrc mrf mri mrm mro mrr mrs mru msa msb msc msf msi msm mso msr mss msu mua mub muc muf mui mum mur mus muu o-i oaa oab oac oaf oai oam oao oar oas oau ob- oba obb obc obf obi obm obo obr obs obu oc- oca ocb occ ocf oci ocm oco ocr ocs ocu of- ofa ofb ofc off ofi ofm ofo ofr ofs ofu oia oib oic oif oii oim oio oir ois oiu om- oma omb omc omf omi omm omo omr oms omu oo- ooa oob ooc oof ooi oom ooo oor oos or- ora orb orc orf ori orm oro orr ors oru os- osa osb osc osf osi osm oso osr oss osu ou- oua ouc ouf oui oum ouo our ous ra- raa rab rac raf rai ram rao rar ras rau rba rbb rbc rbf rbi rbm rbo rbr rbs rbu rca rcb rcc rcf rci rcm rco rcr rcs rcu rfa rfb rfc rff rfi rfm rfo rfr rfs rfu ria rib ric rif rii rim rio rir ris rma rmb rmc rmf rmi rmm rmo rmr rms roa rob roc rof roi rom roo ror ros rou rra rrb rrc rrf rri rrm rrr rrs rru rsa rsb rsc rsf rsi rsm rso rsr rss rsu rua rub ruc ruf rui rum ruo rur rus ruu saa sab sac saf sai sam sao sar sas sau sba sbb sbc sbf sbi sbm sbo sbr sbs sbu sca scb scc scf sci scm sco scr scs scu sfa sfb sfc sff sfi sfm sfo sfr sfs sfu sia sib sic sif sii sim sio sir sis siu sma smb smc smf smi smm smo smr sms smu soa sob soc sof soi som soo sor sos sou sr- sra srb src srf sri srm sro srr srs ss- ssa ssb ssc ssf ssi ssm sso ssr sss ssu sua sub suc suf sui sum suo sur sus suu ua- uaa uab uac uaf uai uam uao uar uas uau uba ubb ubc ubf ubi ubo ubr ubs ubu uca ucb ucc ucf uci ucm uco ucr ucs ucu ufa ufc uff ufi ufm ufo ufr ufs ufu uia uib uic uif uii uim uio uir uis uiu um- uma umb umc umf umi umm umo umr ums umu uoa uob uoc uom uoo uor uos ur- ura urb urc urf uri urm uro urr