-ic bbb bbc bbi bbk bbn bbo bbr bbt bcb bcc bci bck bcn bco bcr bct bi- bib bic bii bik bin bio bir bit bkb bkc bkk bkn bko bkr bkt bnb bnc bni bnk bnn bno bnr bnt bob boc boi bok bon boo bor bot brb bri brk brn bro brr brt btb btc bti btk btn bto btr btt c-- cbb cbc cbi cbk cbn cbo cbr cbt ccb ccc cci cck ccn cco ccr cct ci- cib cic cii cik cin cio cir cit ckb ckc cki cko ckt cn- cnb cnc cni cnn cno cnr cnt co- cob coc coi cok con coo cor cot crb crc cri crk crn cro crr crt ctb ctc cti ctk ctn cto ctr ctt ibb ibc ibi ibk ibn ibo ibr ibt icb icc ici ick icn ico icr ict iib iic iii iin iio iir iit ikb ikc iki ikk iko ikr ikt in- inb inc ini ink inn ino inr int io- iob ioc ioi ion ioo ior iot ir- irb irc iri irk irn iro irr irt itb itc iti itk itn ito itt k-t kbb kbc kbi kbk kbn kbo kbr kcb kcc kci kck kcn kcr kct kib kic kii kik kin kio kir kit kkb kkc kki kkk kkn kkr kkt kn- knc kni knk knn kno knr knt kob koc koi kok kon koo kor kot krc kri krk krn kro krr krt ktb ktc ktk ktn kto ktr ktt n-i nbb nbc nbi nbk nbn nbo nbr nbt ncb ncc nci nck ncn nco ncr nct nib nic nii nik nin nio nir nit nkc nki nkk nkn nko nkr nkt nnb nnc nni nnk nnn nno nnt no- nob noc noi nok non noo nor not nrb nrc nri nrk nrn nro nrr nrt ntb ntc nti ntk ntn nto ntr ntt o-i ob- obb obc obi obk obn obo obr obt oc- ocb occ oci ock ocn oco ocr oct oib oic oii oik oin oio oir oit okb okc oki okk oko okr on- onb onc oni onk onn ono onr ont oo- oob ooc ooi ook oon ooo oor oot or- orb orc ori ork orn oro orr ort ot- otb otc oti otk otn oto otr ott rbb rbc rbi rbk rbn rbo rbr rbt rcb rcc rci rcn rco rcr rct rib ric rii rik rin rio rir rit rkb rkc rkk rko rkt rnb rnc rni rnn rno rnr rnt rob roc roi rok ron roo ror rot rrb rrc rri rrk rrn rrr rrt rtb rtc rti rtk rtn rto rtr rtt tbb tbc tbi tbk tbn tbo tbr tbt tcb tcc tci tck tcn tco tcr tct tib tic tii tik tin tio tir tit tkb tkc tkk tko tkr tkt tnb tnc tni tnk tnn tno tnr tnt to- tob toc toi tok ton too tor tot trb trc tri trk trn tro trr trt ttb ttc tti ttk ttn tto ttr ttt

-nik bbbb bbci bbin bbrc bcbc bccc bcci bcit bcor bctc bibb bibi bibo bicc bici bick bico biin biko bin- binc bini bink binn bino bint bio- bioc bioi bion biot birb biri birk birn biro birr birt bitc bito bitt bnib bnin bnoc bnor bnrr bobb bobi bobo bock boco boi- boii boin boit boki bokn boko bonc boni bonk bonn bono bont boob booc book boon boor boot bor- bori bork born boro borr bort botb boti botn boto bott brcb bric brik brin brio brit brkb brno brob broc brok bron broo bror brot brrr brtc btcc btob btor btrc btrt bttb c-bo cbbc cbcc cbcn cbcr cbct cbir cbit cbkn cbko cbkr cbot cbrn cbrt cbtc ccbc ccbn cccb cccc ccci ccic ccii ccir ccnb ccnc ccni ccnr ccob ccoc ccrc ccri ccrt cctb cctc cctt cibc cibi cibo cicc cici cico cicr cict ciii ciit ciko cikr cin- cinc cini cink cino cint ciob cion cior cirb circ ciri cirk ciro cirr cirt citb citi cito citt ckbc ckbi ckck ckco ckin cknb cknc cknt ckob ckoc ckoi ckoo ckor ckot ckrc cktb cnbc cnci cnco cnib cnic cnki cnrc cnrr cnrt cntc cntk cntr cobb cobi cobo cock coco coct coin coir coit cok- coko con- conc coni conk conn cono cont coob cook coon coot cor- corb corc cori cork corn coro corr cort cotb cotc coti cotn coto cott crbc crcc crcr crib cric crik crin crit crkc crob croc crok cron croo cror crot crrt crtc ctbi ctic ctor ctot ctrc ctrn cttn i-no ibon ibot ibrc ibri ibro ibtb ibtc icbc iccb iccc icci iccn icco iccr icct icnb icnc icoc icon icor icrc icrr icrt iiii iiio iiit iino iioi iioo iirc iitr iitt ikin ikki ikko ikon ikoo ikri inbo incb inci inco incr init inki inni inno innr ino- inoi inon inor inot inri inro inti intn into intr iobi ioci ioii ioio ioit ioko ioni ionn iono iooi iooo iori ioto ircc iri- iric irin irio irki irob iroc iron irrc irri irti itic itin itko itno itoi iton itoo itor itri itto k-ci kbbb kbbc kbbi kbbk kbbo kbbr kbbt kbcb kbci kbck kbco kbcr kbct kbib kbic kbik kbio kbit kbkb kbkk kbko kbkr kbnn kbno kbnr kbob kboc kboi kbok kbon kboo kbot kbrb kbrc kbri kbrk kbrn kbro kbrt kbtb kbtc kbtk kbtn kbto kbtr kbtt kcbc kcbi kcbk kcbr kccb kccc kcci kcck kccr kcct kcic kcii kcin kcir kcit kckc kckk kckn kcko kckr kcnb kcni kcno kcnr kcnt kcob kcon kcor kcot kcrc kcri kcrn kcro kcrr kcrt kctb kctc kcti kctn kcto kibb kibc kibi kibo kibr kibt kicb kicc kick kicr kict kiic kiii kiik kiit kikc kiki kikk kiko kikr kikt kin- kinb kinc kini kink kinn kino kint kioc kioi kiok kion kioo kiot kirb kirc kiri kirk kirn kiro kirr kirt kitc kiti kitn kito kitr kitt kkbb