-ic bbb bbc bbi bbk bbn bbo bbs bbt bcb bcc bci bck bcn bco bcs bct bi- bib bic bii bik bin bio bis bit bkb bkc bkk bkn bko bks bkt bnb bnc bni bnk bnn bno bns bnt bob boc boi bok bon boo bos bot bsb bsc bsi bsk bsn bso bss bst btb btc bti btk btn bto bts btt c-- cbb cbc cbi cbk cbn cbo cbs cbt ccb ccc cci cck ccn cco ccs cct ci- cib cic cii cik cin cio cis cit ckb ckc cki cko cks ckt cn- cnb cnc cni cnn cno cns cnt co- cob coc coi cok con coo cos cot csb csc csi csk csn cso css cst ctb ctc cti ctk ctn cto cts ctt ibb ibc ibi ibk ibn ibo ibs ibt icb icc ici ick icn ico ics ict iib iic iii iin iio iis iit ikb ikc iki ikk iko iks ikt in- inb inc ini ink inn ino ins int io- iob ioc ioi ion ioo ios iot is- isb isc isi isk isn iso iss ist itb itc iti itk itn ito its itt k-t kbb kbc kbi kbk kbn kbo kbs kcb kcc kci kck kcn kcs kct kib kic kii kik kin kio kis kit kkb kkc kki kkk kkn kks kkt kn- knc kni knk knn kno knt kob koc koi kok kon koo kos kot ksb ksc ksi ksk ksn kso kss kst ktb ktc ktk ktn kto kts ktt n-i nbb nbc nbi nbk nbn nbo nbs nbt ncb ncc nci nck ncn nco ncs nct nib nic nii nik nin nio nis nit nkc nki nkk nkn nko nks nkt nnb nnc nni nnk nnn nno nns nnt no- nob noc noi nok non noo nos not nsb nsc nsi nsk nsn nso nss nst ntb ntc nti ntk ntn nto nts ntt o-i ob- obb obc obi obk obn obo obs obt oc- ocb occ oci ock ocn oco ocs oct oib oic oii oik oin oio ois oit okb okc oki okk oko oks on- onb onc oni onk onn ono ons ont oo- oob ooc ooi ook oon ooo oos oot os- osb osc osi osk osn oso oss ost ot- otb otc oti otk otn oto ots ott sbb sbc sbi sbk sbn sbo sbs sbt scb scc sci sck scn sco scs sct sib sic sii sik sin sio sis sit sk- skb skc ski skk sko sks skt snb snc sni snk snn sno sns snt sob soc soi sok son soo sos sot ss- ssb ssc ssi ssk ssn sso sss sst stb stc sti stk stn sto sts stt tbb tbc tbi tbk tbn tbo tbs tbt tcb tcc tci tck tcn tco tcs tct tib tic tii tik tin tio tis tit tkb tkc tkk tko tks tkt tnb tnc tni tnk tnn tno tns tnt to- tob toc toi tok ton too tos tot tsb tsc tsi tsk tsn tso tss tst ttb ttc tti ttk ttn tto tts ttt

-nik bbbb bbbs bbci bbin bcbc bcbs bccc bcci bccs bcis bcit bcos bcsc bcsn bcss bctc bcts bibb bibi bibo bibs bicc bici bick bico bics biin biis biko bin- binc bini bink binn bino bins bint bio- bioc bioi bion bios biot bis- bisc bisk biso biss bist bitc bito bits bitt bnib bnin bnoc bnss bobb bobi bobo bobs bock boco bocs boi- boii boin bois boit boki bokn boko boks bonc boni bonk bonn bono bons bont boob booc book boon boos boot bosc bosi bosk bosn boso boss bost botb boti botn boto bots bott bsci bscs bsic bsin bskt bsns bson bsos bssc bsts btcc btcs btob btss bttb c-bo cbbc cbbs cbcc cbcn cbcs cbct cbit cbkn cbko cbot cbsc cbsi cbsn cbtc ccbc ccbn cccb cccc ccci cccs ccic ccii ccis ccnb ccnc ccni ccns ccob ccoc ccsi ccsn ccss ccst cctb cctc cctt cibc cibi cibo cicc cici cico cics cict ciii ciis ciit ciko cin- cinc cini cink cino cint ciob cion cios cis- cisc cisk cisn ciss cist citb citi cito cits citt ckbc ckbi ckck ckco ckcs ckin cknb cknc ckns cknt ckob ckoc ckoi ckoo ckos ckot cksb ckso ckst cktb ckts cnbc cnci cnco cnib cnic cnki cnss cntc cntk cobb cobi cobo cobs cock coco coct coin cois coit cok- coko con- conc coni conk conn cono cons cont coob cook coon coos coot cosc cosi coso coss cost cotb cotc coti cotn coto cots cott cscb cscc csci csco cscs csib csik csio csis csit csks csob csos csot cstc csto csts ctbi ctbs ctic ctns ctos ctot ctsc ctsn ctss cttn ctts i-no ibcs ibis ibns ibon ibos ibot ibsn ibss ibtb ibtc ibts icbc icbs iccb iccc icci iccn icco iccs icct icis icks icnb icnc icns icoc icon icos icsb icsc icsi icss icst icts iiii iiio iiis iiit iino iioi iioo iios iisc iisi iist iitt ikin ikki ikko ikon ikoo inbo incb inci inco incs inis init inki inks inni inno inns ino- inoi inon inos inot insc inso inss inst inti intn into ints iobi ioci ioii ioio ioit ioko ioni ionn iono ions iooi iooo ioos ioso ioto isbn isbt iscc isci iscn isco iscs isct isic isin isis isit isko isno isnt iso- isoc isok ison isos issc issi isso isss istc isti isto ists itbs itcs itic itin itis itko itno itoi iton itoo itos itsi itso itto k-ci k-os kbbb kbbc kbbi kbbk kbbo kbbs kbbt kbcb kbci kbck kbco kbcs kbct kbib kbic kbik kbio kbis kbit kbkb kbkk kbko kbnn kbno kbob kboc kboi kbok kbon kboo kbos kbot kbsb kbsi kbsk kbsn kbso kbss kbst kbtb kbtc kbtk kbtn kbto kbts kbtt kcbc kcbi kcbk kcbs kccb kccc kcci kcck kcct kcic kcii kcin kcis kcit kckc kckk kckn kcko kcnb kcni kcno kcns kcnt