-ic a-a a-b a-c a-i aaa aab aac aaf aai aan aao aar aas aay ab- aba abb abc abf abi abn abo abr abs aby ac- aca acb acc acf aci acn aco acr acs acy af- afa afb afc aff afi afn afo afr afs afy ai- aia aib aic aif aii ain aio air ais aiy an- ana anb anc anf ani ann ano anr ans any aoa aob aoc aof aoi aon aoo aor aos ar- ara arb arc arf ari arn aro arr ars ary as- asa asb asc asf asi asn aso asr ass asy ay- aya ayc ayf ayi ayn ayo ayr ays baa bab bac baf bai ban bao bar bas bay bba bbb bbc bbf bbi bbn bbo bbr bbs bby bca bcb bcc bcf bci bcn bco bcr bcs bcy bfa bfb bfc bff bfi bfn bfo bfr bfs bfy bi- bia bib bic bif bii bin bio bir bis biy bna bnb bnc bnf bni bnn bno bnr bns boa bob boc bof boi bon boo bor bos boy bra brb brf bri brn bro brr brs bry bsa bsb bsc bsf bsi bsn bso bsr bss bsy by- bya byc byf byi byn byo byr bys c-- caa cab cac caf cai can cao car cas cay cba cbb cbc cbf cbi cbn cbo cbr cbs cby cca ccb ccc ccf cci ccn cco ccr ccs cfa cfb cfc cff cfi cfn cfo cfr cfs ci- cia cib cic cif cii cin cio cir cis cn- cna cnb cnc cnf cni cnn cno cnr cns cny co- coa cob coc cof coi con coo cor cos coy cra crb crc crf cri crn cro crr crs cry csa csb csc csf csi csn cso csr css csy cya cyb cyc cyf cyn cyo cyr cys faa fab fac faf fai fan fao far fas fay fba fbb fbc fbf fbi fbn fbo fbr fbs fca fcb fcc fcf fci fcn fco fcr fcs fcy ffa ffc fff ffi ffn ffo ffr ffs ffy fia fib fic fif fii fin fir fis fna fnb fnc fnf fni fnn fnr fns foa fob foc fof foi fon foo for fos foy fra frb frc frf fri frn fro frr frs fry fsa fsb fsc fsf fsi fsn fso fsr fss fy- fya fyb fyc fyi fyn fyo i-f ia- iaa iab iac iaf iai ian iao iar ias iba ibb ibc ibf ibi ibn ibo ibr ibs iby ica icb icc icf ici icn ico icr ics icy ifa ifb ifc iff ifi ifn ifo ifr ifs ify iia iib iic iif iii iin iio iir iis in- ina inb inc inf ini inn ino inr ins iny io- ioa iob ioc iof ioi ion ioo ior ios ir- ira irb irc irf iri irn iro irr irs iry is- isa isb isc isf isi isn iso isr iss isy iya iyc iyo iyr iys iyy n-i naa nab nac naf nai nan nao nar nas nay nba nbb nbc nbf nbi nbn nbo nbr nbs nca ncb ncc ncf nci ncn nco ncr ncs nfa nfb nfc nff nfi nfn nfo nfr nfs nia nib nic nif nii nin nio nir nis nna nnb nnc nnf nni nnn nno nns no- noa nob noc nof noi non noo nor nos noy nra nrb nrc nrf nri nrn nro nrr nrs nry nsa nsb nsc nsf nsi nsn nso nsr nss nsy nya nyc nyf nyn nyo nys nyy o-i oaa oab oac oaf oai oan oao oar oas ob- oba obb obc obf obi obn obo obr obs oby oc- oca ocb occ ocf oci ocn oco ocr ocs of- ofa ofb ofc off ofi ofn ofo ofr ofs oia oib oic oif oii oin oio oir ois on- ona onb onc onf oni onn ono onr ons ony oo- ooa oob ooc oof ooi oon ooo oor oos or- ora orb orc orf ori orn oro orr ors ory os- osa osb osc osf osi osn oso osr oss oya oyi oyo oys ra- raa rab rac raf rai ran rao rar ras ray rba rbb rbc rbf rbi rbn rbo rbr rbs rca rcb rcc rcf rci rcn rco rcr rcs rfa rfb rfc rff rfi rfn rfo rfr rfs ria rib ric rif rii rin rio rir ris riy rna rnb rnc rni rnn rno rnr rns rny roa rob roc rof roi ron roo ror ros roy rra rrb rrc rrf rri rrn rrr rrs rsa rsb rsc rsf rsi rsn rso rsr rss ry- rya ryc ryf ryn ryo ryr rys ryy saa sab sac saf sai san sao sar sas say sba sbb sbc sbf sbi sbn sbo sbr sbs sby sca scb scc scf sci scn sco scr scs sfa sfb sfc sff sfi sfn sfo sfr sfs sia sib sic sif sii sin sio sir sis sna snb snc snf sni snn sno snr sns sny soa sob soc sof soi son soo sor sos soy sr- sra srb src srf sri srn sro srr srs sry ss- ssa ssb ssc ssf ssi ssn sso ssr sss sy- sya syb syc syi syn syr sys yaa yab yac yaf yai yan yao yar yas yay ybc ybf ybi ybr ybs yby yca ycc ycf yci yco ycs ycy yfa yfc yff yfr yfs yif yii yin yio yir yis yna ynn yns yny yob yoc yof yoi yon yoo yor yos yoy yra yrc yrf yrn yro yrs ysa ysb ysc ysi yso ysr yss ysy yyb yyc yyf yys yyy