-ic bbb bbc bbi bbn bbo bbr bbs bbt bcb bcc bci bcn bco bcr bcs bct bi- bib bic bii bin bio bir bis bit bnb bnc bni bnn bno bnr bns bnt bob boc boi bon boo bor bos bot brb bri brn bro brr brs brt bsb bsc bsi bsn bso bsr bss bst btb btc bti btn bto btr bts btt c-- cbb cbc cbi cbn cbo cbr cbs cbt ccb ccc cci ccn cco ccr ccs cct ci- cib cic cii cin cio cir cis cit cn- cnb cnc cni cnn cno cnr cns cnt co- cob coc coi con coo cor cos cot crb crc cri crn cro crr crs crt csb csc csi csn cso csr css cst ctb ctc cti ctn cto ctr cts ctt ibb ibc ibi ibn ibo ibr ibs ibt icb icc ici icn ico icr ics ict iib iic iii iin iio iir iis iit in- inb inc ini inn ino inr ins int io- iob ioc ioi ion ioo ior ios iot ir- irb irc iri irn iro irr irs irt is- isb isc isi isn iso isr iss ist itb itc iti itn ito its itt n-i nbb nbc nbi nbn nbo nbr nbs nbt ncb ncc nci ncn nco ncr ncs nct nib nic nii nin nio nir nis nit nnb nnc nni nnn nno nns nnt no- nob noc noi non noo nor nos not nrb nrc nri nrn nro nrr nrs nrt nsb nsc nsi nsn nso nsr nss nst ntb ntc nti ntn nto ntr nts ntt o-i ob- obb obc obi obn obo obr obs obt oc- ocb occ oci ocn oco ocr ocs oct oib oic oii oin oio oir ois oit on- onb onc oni onn ono onr ons ont oo- oob ooc ooi oon ooo oor oos oot or- orb orc ori orn oro orr ors ort os- osb osc osi osn oso osr oss ost ot- otb otc oti otn oto otr ots ott rbb rbc rbi rbn rbo rbr rbs rbt rcb rcc rci rcn rco rcr rcs rct rib ric rii rin rio rir ris rit rnb rnc rni rnn rno rnr rns rnt rob roc roi ron roo ror ros rot rrb rrc rri rrn rrr rrs rrt rsb rsc rsi rsn rso rsr rss rst rtb rtc rti rtn rto rtr rts rtt sbb sbc sbi sbn sbo sbr sbs sbt scb scc sci scn sco scr scs sct sib sic sii sin sio sir sis sit snb snc sni snn sno snr sns snt sob soc soi son soo sor sos sot sr- srb src sri srn sro srr srs srt ss- ssb ssc ssi ssn sso ssr sss sst stb stc sti stn sto str sts stt tbb tbc tbi tbn tbo tbr tbs tbt tcb tcc tci tcn tco tcr tcs tct tib tic tii tin tio tir tis tit tnb tnc tni tnn tno tnr tns tnt to- tob toc toi ton too tor tos tot trb trc tri trn tro trr trs trt tsb tsc tsi tsn tso tsr tss tst ttb ttc tti ttn tto ttr tts ttt

bbbb bbbs bbci bbin bbrc bcbc bcbs bccc bcci bccs bcis bcit bcor bcos bcrs bcsc bcsn bcss bctc bcts bibb bibi bibo bibs bicc bici bico bics biin biis bin- binc bini binn bino bins bint bio- bioc bioi bion bios biot birb biri birn biro birr birs birt bis- bisc biso biss bist bitc bito bits bitt bnib bnin bnoc bnor bnrr bnss bobb bobi bobo bobs boco bocs boi- boii boin bois boit bonc boni bonn bono bons bont boob booc boon boor boos boot bor- bori born boro borr bors bort bosc bosi bosn boso boss bost botb boti botn boto bots bott brcb bric brin brio bris brit brno brns brob broc bron broo bror bros brot brrr brrs brsb brsr brst brtc bsci bscs bsic bsin bsns bson bsos bssc bsts btcc btcs btob btor btrc btrt btss bttb c-bo cbbc cbbs cbcc cbcn cbcr cbcs cbct cbir cbit cbot cbrn cbrt cbsc cbsi cbsn cbtc ccbc ccbn cccb cccc ccci cccs ccic ccii ccir ccis ccnb ccnc ccni ccnr ccns ccob ccoc ccrc ccri ccrs ccrt ccsi ccsn ccss ccst cctb cctc cctt cibc cibi cibo cicc cici cico cicr cics cict ciii ciis ciit cin- cinc cini cino cint ciob cion cior cios cirb circ ciri ciro cirr cirs cirt cis- cisc cisn cisr ciss cist citb citi cito cits citt cnbc cnci cnco cnib cnic cnrc cnrr cnrt cnss cntc cntr cobb cobi cobo cobs coco coct coin coir cois coit con- conc coni conn cono cons cont coob coon coos coot cor- corb corc cori corn coro corr cors cort cosc cosi coso coss cost cotb cotc coti cotn coto cots cott crbc crcc crcr crib cric crin cris crit crns crob croc cron croo cror crot crrt crss crst crtc crts cscb cscc csci csco cscr cscs csib csio csir csis csit csob csor csos csot csrc csrs cssr cstc csto cstr csts ctbi ctbs ctic ctns ctor ctos ctot ctrc ctrn ctrs ctsc ctsn ctss cttn ctts i-no ibcs ibis ibns ibon ibos ibot ibrc ibri ibro ibsn ibss ibtb ibtc ibts icbc icbs iccb iccc icci iccn icco iccr iccs icct icis icnb icnc icns icoc icon icor icos icrc icrr icrs icrt icsb icsc icsi icsr icss icst icts iiii iiio iiis iiit iino iioi iioo iios iirc iirs iisc iisi iisr iist iitr iitt inbo incb inci inco incr incs inis init inni inno innr inns ino- inoi inon inor inos inot inri inro inrs insc inso inss inst inti intn into intr ints iobi ioci ioii ioio ioit ioni ionn iono ions iooi iooo ioos iori iors ioso ioto ircc ircs iri- iric irin irio iris irob iroc iron irrc irri irrs irti irts isbn isbt iscc isci iscn isco iscr iscs isct