-ic a-a a-b a-c a-i aaa aab aac aaf aai aan aao aar aay ab- aba abb abc abf abi abn abo abr aby ac- aca acb acc acf aci acn aco acr acy af- afa afb afc aff afi afn afo afr afy ai- aia aib aic aif aii ain aio air aiy an- ana anb anc anf ani ann ano anr any aoa aob aoc aof aoi aon aoo aor ar- ara arb arc arf ari arn aro arr ary ay- aya ayc ayf ayi ayn ayo ayr baa bab bac baf bai ban bao bar bay bba bbb bbc bbf bbi bbn bbo bbr bby bca bcb bcc bcf bci bcn bco bcr bcy bfa bfb bfc bff bfi bfn bfo bfr bfy bi- bia bib bic bif bii bin bio bir biy bna bnb bnc bnf bni bnn bno bnr boa bob boc bof boi bon boo bor boy bra brb brf bri brn bro brr bry by- bya byc byf byi byn byo byr c-- caa cab cac caf cai can cao car cay cba cbb cbc cbf cbi cbn cbo cbr cby cca ccb ccc ccf cci ccn cco ccr cfa cfb cfc cff cfi cfn cfo cfr ci- cia cib cic cif cii cin cio cir cn- cna cnb cnc cnf cni cnn cno cnr cny co- coa cob coc cof coi con coo cor coy cra crb crc crf cri crn cro crr cry cya cyb cyc cyf cyn cyo cyr faa fab fac faf fai fan fao far fay fba fbb fbc fbf fbi fbn fbo fbr fca fcb fcc fcf fci fcn fco fcr fcy ffa ffc fff ffi ffn ffo ffr ffy fia fib fic fif fii fin fir fna fnb fnc fnf fni fnn fnr foa fob foc fof foi fon foo for foy fra frb frc frf fri frn fro frr fry fy- fya fyb fyc fyi fyn fyo i-f ia- iaa iab iac iaf iai ian iao iar iba ibb ibc ibf ibi ibn ibo ibr iby ica icb icc icf ici icn ico icr icy ifa ifb ifc iff ifi ifn ifo ifr ify iia iib iic iif iii iin iio iir in- ina inb inc inf ini inn ino inr iny io- ioa iob ioc iof ioi ion ioo ior ir- ira irb irc irf iri irn iro irr iry iya iyc iyo iyr iyy n-i naa nab nac naf nai nan nao nar nay nba nbb nbc nbf nbi nbn nbo nbr nca ncb ncc ncf nci ncn nco ncr nfa nfb nfc nff nfi nfn nfo nfr nia nib nic nif nii nin nio nir nna nnb nnc nnf nni nnn nno no- noa nob noc nof noi non noo nor noy nra nrb nrc nrf nri nrn nro nrr nry nya nyc nyf nyn nyo nyy o-i oaa oab oac oaf oai oan oao oar ob- oba obb obc obf obi obn obo obr oby oc- oca ocb occ ocf oci ocn oco ocr of- ofa ofb ofc off ofi ofn ofo ofr oia oib oic oif oii oin oio oir on- ona onb onc onf oni onn ono onr ony oo- ooa oob ooc oof ooi oon ooo oor or- ora orb orc orf ori orn oro orr ory oya oyi oyo ra- raa rab rac raf rai ran rao rar ray rba rbb rbc rbf rbi rbn rbo rbr rca rcb rcc rcf rci rcn rco rcr rfa rfb rfc rff rfi rfn rfo rfr ria rib ric rif rii rin rio rir riy rna rnb rnc rni rnn rno rnr rny roa rob roc rof roi ron roo ror roy rra rrb rrc rrf rri rrn rrr ry- rya ryc ryf ryn ryo ryr ryy yaa yab yac yaf yai yan yao yar yay ybc ybf ybi ybr yby yca ycc ycf yci yco ycy yfa yfc yff yfr yif yii yin yio yir yna ynn yny yob yoc yof yoi yon yoo yor yoy yra yrc yrf yrn yro yyb yyc yyf yyy