-ic -ol bbb bbc bbi bbk bbl bbo bbr bbt bcb bcc bci bck bcl bco bcr bct bi- bib bic bii bik bil bio bir bit bkb bkc bkk bkl bko bkr bkt blb blc bli blk bll blo blr blt bob boc boi bok bol boo bor bot brb bri brk brl bro brr brt btb btc bti btk btl bto btr btt c-- cbb cbc cbi cbk cbl cbo cbr cbt ccb ccc cci cck ccl cco ccr cct ci- cib cic cii cik cil cio cir cit ckb ckc cki cko ckt cl- clb clc cli clk cll clo clr clt co- cob coc coi cok col coo cor cot crb crc cri crk crl cro crr crt ctb ctc cti ctk ctl cto ctr ctt ibb ibc ibi ibk ibl ibo ibr ibt icb icc ici ick icl ico icr ict iib iic iii iil iio iir iit ikb ikc iki ikk ikl iko ikr ikt il- ilb ilc ili ilk ill ilo ilr ilt io- iob ioc ioi iol ioo ior iot ir- irb irc iri irk irl iro irr irt itb itc iti itk itl ito itt k-t kbb kbc kbi kbk kbl kbo kbr kcb kcc kci kck kcl kcr kct kib kic kii kik kil kio kir kit kkb kkc kki kkk kkl kkr kkt kl- klb klc kli klo klr klt kob koc koi kok kol koo kor kot krc kri krk krl kro krr krt ktb ktc ktk ktl kto ktr ktt lbb lbc lbi lbk lbl lbo lbr lbt lcb lcc lci lck lcl lco lcr lct lib lic lii lik lil lio lir lit lkb lkl lkr lkt llb llc lli llk lll llo llr llt lob loc loi lok lol loo lor lot lrb lrc lri lrk lro lrr lrt ltb ltc lti ltk ltl lto ltr ltt o-i ob- obb obc obi obk obl obo obr obt oc- ocb occ oci ock ocl oco ocr oct oib oic oii oik oil oio oir oit okb okc oki okk okl oko okr olb olc oli olk oll olo olt oo- oob ooc ooi ook ool ooo oor oot or- orb orc ori ork orl oro orr ort ot- otb otc oti otk otl oto otr ott rbb rbc rbi rbk rbl rbo rbr rbt rcb rcc rci rcl rco rcr rct rib ric rii rik ril rio rir rit rkb rkc rkk rko rkt rlc rli rll rlo rlr rlt rob roc roi rok rol roo ror rot rrb rrc rri rrk rrl rrr rrt rtb rtc rti rtk rtl rto rtr rtt tbb tbc tbi tbk tbl tbo tbr tbt tcb tcc tci tck tcl tco tcr tct tib tic tii tik til tio tir tit tkb tkc tkk tkl tko tkr tkt tlc tli tlk tll tlo tlr tlt to- tob toc toi tok tol too tor tot trb trc tri trk trl tro trr trt ttb ttc tti ttk ttl tto ttr ttt

bbbb bbci bblb bbrc bcbc bccc bcci bccl bcit bcor bctc bibb bibi bibl bibo bicc bici bick bico biko bili bilk bill bilo bilt bio- bioc bioi biol biot birb biri birk birl biro birr birt bitc bito bitt blbt blic blik blio blir blit blkb blob bloc blok bloo blot blrc bobb bobi bobo bock boco boi- boii boil boit boki boko boli bolk boll bolo bolt boob booc book bool boor boot bor- bori bork boro borr bort botb boti boto bott brcb bric brik bril brio brit brkb brob broc brok brol broo bror brot brrr brtc btcc btcl btob btor btrc btrt bttb c-bo cbbc cbcc cbcl cbcr cbct cbir cbit cbkl cbko cbkr cblb cblc cbol cbot cbrl cbrt cbtc cbtl ccbc cccb cccc ccci cccl ccic ccii ccil ccir cclc ccli ccob ccoc ccrc ccri ccrl ccrt cctb cctc cctl cctt cibc cibi cibo cicc cici cico cicr cict ciii ciit ciko cikr cili cilk cill cilo cilt ciob cior cirb circ ciri cirk cirl ciro cirr cirt citb citi citl cito citt ckbc ckbi ckck ckcl ckco ckob ckoc ckoi ckoo ckor ckot ckrc cktb clib clic clii clik clio clir clit clob clok cloo clor clot clri clro cltb cltc cobb cobi cobo cock coco coct coil coir coit cok- coko col- colb coli colk coll colo colt coob cook cool coot cor- corb corc cori cork corl coro corr cort cotb cotc coti coto cott crbc crcc crcr crib cric crik crit crkc crkl crob croc crok crol croo cror crot crrt crtc crtl ctbi ctic ctol ctor ctot ctrc ctrl ibot ibrc ibri ibro ibtb ibtc ibtl icbc iccb iccc icci iccl icco iccr icct icll iclr icoc icor icrc icrr icrt iiii iiio iiit iioi iioo iirc iitr iitt ikki ikko ikoo ikri ilbc ilic ilio ilir ilit ilki ill- illi illo illt iloc ilok iloo ilot iobi ioci ioii ioio ioit ioko iolo iooi iooo iori ioto ircc iri- iric iril irio irki irlb irob iroc irrc irri irti itic itil itko itll itoi itol itoo itor itri itto k-ci k-lo kbbb kbbc kbbi kbbk kbbl kbbo kbbr kbbt kbcb kbci kbck kbcl kbco kbcr kbct kbib kbic kbik kbil kbio kbit kbkb kbkk kbkl kbko kbkr kblb kbll kblo kblr kblt kbob kboc kboi kbok kboo kbot kbrb kbrc kbri kbrk kbrl kbro kbrt kbtb kbtc kbtk kbtl kbto kbtr kbtt kcbc kcbi kcbk kcbl kcbr kccb kccc kcci kcck kccl kccr kcct kcic kcii kcil kcir kcit kckc kckk kckl kcko kckr kclc kcli kclk kcll kclr kclt kcob kcol kcor kcot kcrc kcri kcro kcrr kcrt kctb kctc kcti kcto kibb kibc kibi kibl kibo kibr kibt kicb kicc kick kicl kicr kict kiic kiii kiik kiit kikc kiki kikk kiko kikr kikt kilb kili kilk kill kilo kilr kilt kioc kioi kiok kiol kioo kiot kirb kirc kiri kirk kiro kirr kirt kitc kiti kitl kito kitr kitt kkbb kkbi kkbl kkbo kkbr