-ic a-a a-b a-c a-i aaa aab aac aai aan aao aar aas aay ab- aba abb abc abi abn abo abr abs aby ac- aca acb acc aci acn aco acr acs acy ai- aia aib aic aii ain aio air ais aiy an- ana anb anc ani ann ano anr ans any aoa aob aoc aoi aon aoo aor aos ar- ara arb arc ari arn aro arr ars ary as- asa asb asc asi asn aso asr ass asy ay- aya ayc ayi ayn ayo ayr ays baa bab bac bai ban bao bar bas bay bba bbb bbc bbi bbn bbo bbr bbs bby bca bcb bcc bci bcn bco bcr bcs bcy bi- bia bib bic bii bin bio bir bis biy bna bnb bnc bni bnn bno bnr bns boa bob boc boi bon boo bor bos boy bra brb bri brn bro brr brs bry bsa bsb bsc bsi bsn bso bsr bss bsy by- bya byc byi byn byo byr bys c-- caa cab cac cai can cao car cas cay cba cbb cbc cbi cbn cbo cbr cbs cby cca ccb ccc cci ccn cco ccr ccs ci- cia cib cic cii cin cio cir cis cn- cna cnb cnc cni cnn cno cnr cns cny co- coa cob coc coi con coo cor cos coy cra crb crc cri crn cro crr crs cry csa csb csc csi csn cso csr css csy cya cyb cyc cyn cyo cyr cys ia- iaa iab iac iai ian iao iar ias iba ibb ibc ibi ibn ibo ibr ibs iby ica icb icc ici icn ico icr ics icy iia iib iic iii iin iio iir iis in- ina inb inc ini inn ino inr ins iny io- ioa iob ioc ioi ion ioo ior ios ir- ira irb irc iri irn iro irr irs iry is- isa isb isc isi isn iso isr iss isy iya iyc iyo iyr iys iyy n-i naa nab nac nai nan nao nar nas nay nba nbb nbc nbi nbn nbo nbr nbs nca ncb ncc nci ncn nco ncr ncs nia nib nic nii nin nio nir nis nna nnb nnc nni nnn nno nns no- noa nob noc noi non noo nor nos noy nra nrb nrc nri nrn nro nrr nrs nry nsa nsb nsc nsi nsn nso nsr nss nsy nya nyc nyn nyo nys nyy o-i oaa oab oac oai oan oao oar oas ob- oba obb obc obi obn obo obr obs oby oc- oca ocb occ oci ocn oco ocr ocs oia oib oic oii oin oio oir ois on- ona onb onc oni onn ono onr ons ony oo- ooa oob ooc ooi oon ooo oor oos or- ora orb orc ori orn oro orr ors ory os- osa osb osc osi osn oso osr oss oya oyi oyo oys ra- raa rab rac rai ran rao rar ras ray rba rbb rbc rbi rbn rbo rbr rbs rca rcb rcc rci rcn rco rcr rcs ria rib ric rii rin rio rir ris riy rna rnb rnc rni rnn rno rnr rns rny roa rob roc roi ron roo ror ros roy rra rrb rrc rri rrn rrr rrs rsa rsb rsc rsi rsn rso rsr rss ry- rya ryc ryn ryo ryr rys ryy saa sab sac sai san sao sar sas say sba sbb sbc sbi sbn sbo sbr sbs sby sca scb scc sci scn sco scr scs sia sib sic sii sin sio sir sis sna snb snc sni snn sno snr sns sny soa sob soc soi son soo sor sos soy sr- sra srb src sri srn sro srr srs sry ss- ssa ssb ssc ssi ssn sso ssr sss sy- sya syb syc syi syn syr sys yaa yab yac yai yan yao yar yas yay ybc ybi ybr ybs yby yca ycc yci yco ycs ycy yii yin yio yir yis yna ynn yns yny yob yoc yoi yon yoo yor yos yoy yra yrc yrn yro yrs ysa ysb ysc ysi yso ysr yss ysy yyb yyc yys yyy