-ic bbb bbc bbf bbi bbo bbr bbs bbt bby bcb bcc bcf bci bco bcr bcs bct bcy bfb bfc bff bfi bfo bfr bfs bft bfy bi- bib bic bif bii bio bir bis bit biy bob boc bof boi boo bor bos bot boy brb brf bri bro brr brs brt bry bsb bsc bsf bsi bso bsr bss bst bsy btb btc btf bti bto btr bts btt bty by- byc byf byi byo byr bys byt c-- cbb cbc cbf cbi cbo cbr cbs cbt cby ccb ccc ccf cci cco ccr ccs cct cfb cfc cff cfi cfo cfr cfs cft ci- cib cic cif cii cio cir cis cit co- cob coc cof coi coo cor cos cot coy crb crc crf cri cro crr crs crt cry csb csc csf csi cso csr css cst csy ctb ctc ctf cti cto ctr cts ctt cty cyb cyc cyf cyo cyr cys cyt fbb fbc fbf fbi fbo fbr fbs fbt fcb fcc fcf fci fco fcr fcs fct fcy ffc fff ffi ffo ffr ffs fft ffy fib fic fif fii fir fis fit fob foc fof foi foo for fos fot foy frb frc frf fri fro frr frs frt fry fsb fsc fsf fsi fso fsr fss fst ftb ftc ftf fti fto ftr fts ftt fty fy- fyb fyc fyi fyo i-f ibb ibc ibf ibi ibo ibr ibs ibt iby icb icc icf ici ico icr ics ict icy ifb ifc iff ifi ifo ifr ifs ift ify iib iic iif iii iio iir iis iit io- iob ioc iof ioi ioo ior ios iot ir- irb irc irf iri iro irr irs irt iry is- isb isc isf isi iso isr iss ist isy itb itc itf iti ito its itt ity iyc iyo iyr iys iyt iyy o-i ob- obb obc obf obi obo obr obs obt oby oc- ocb occ ocf oci oco ocr ocs oct of- ofb ofc off ofi ofo ofr ofs oft oib oic oif oii oio oir ois oit oo- oob ooc oof ooi ooo oor oos oot or- orb orc orf ori oro orr ors ort ory os- osb osc osf osi oso osr oss ost ot- otb otc otf oti oto otr ots ott oyi oyo oys rbb rbc rbf rbi rbo rbr rbs rbt rcb rcc rcf rci rco rcr rcs rct rfb rfc rff rfi rfo rfr rfs rft rib ric rif rii rio rir ris rit riy rob roc rof roi roo ror ros rot roy rrb rrc rrf rri rrr rrs rrt rsb rsc rsf rsi rso rsr rss rst rtb rtc rtf rti rto rtr rts rtt rty ry- ryc ryf ryo ryr rys ryy sbb sbc sbf sbi sbo sbr sbs sbt sby scb scc scf sci sco scr scs sct sfb sfc sff sfi sfo sfr sfs sft sib sic sif sii sio sir sis sit sob soc sof soi soo sor sos sot soy sr- srb src srf sri sro srr srs srt sry ss- ssb ssc ssf ssi sso ssr sss sst stb stc stf sti sto str sts stt sty sy- syb syc syi syr sys syt tbb tbc tbf tbi tbo tbr tbs tbt tcb tcc tcf tci tco tcr tcs tct tfb tfc tff tfi tfo tfr tfs tft tib tic tif tii tio tir tis tit tiy to- tob toc tof toi too tor tos tot toy trb trc trf tri tro trr trs trt try tsb tsc tsf tsi tso tsr tss tst tsy ttb ttc ttf tti tto ttr tts ttt tty tyc tyf tyo tyr tys tyt ybc ybf ybi ybr ybs yby ycc ycf yci yco ycs ycy yfc yff yfr yfs yft yif yii yio yir yis yit yob yoc yof yoi yoo yor yos yot yoy yrc yrf yro yrs yrt ysb ysc ysi yso ysr yss yst ysy ytc ytf yto ytr yts ytt yyb yyc yyf yys yyt yyy