-ic bbb bbc bbd bbf bbi bbk bbo bbr bcb bcc bcd bcf bci bck bco bcr bdb bdc bdd bdf bdi bdk bdo bdr bfb bfc bfd bff bfi bfo bfr bi- bib bic bid bif bii bik bio bir bkb bkc bkf bkk bko bkr bob boc bod bof boi bok boo bor brb brd brf bri brk bro brr c-- cbb cbc cbd cbf cbi cbk cbo cbr ccb ccc ccd ccf cci cck cco ccr cdb cdc cdd cdf cdi cdk cdo cdr cfb cfc cfd cff cfi cfk cfo cfr ci- cib cic cid cif cii cik cio cir ckb ckc ckd cki cko co- cob coc cod cof coi cok coo cor crb crc crd crf cri crk cro crr dbb dbc dbd dbf dbi dbk dbo dbr dcb dcc dcd dcf dci dck dco dcr ddb ddc ddd ddf ddi ddk ddo ddr dfb dfc dfd dff dfi dfk dfo dfr di- dib dic did dif dii dik dio dir dkb dkc dki dkk dko dkr dob doc dod dof doi dok doo dor drb drc drd dri drk dro drr fbb fbc fbd fbf fbi fbk fbo fbr fcb fcc fcd fcf fci fck fco fcr fdb fdc fdd fdf fdi fdk fdo fdr ffc ffd fff ffi ffk ffo ffr fib fic fid fif fii fik fir fkb fkc fkf fki fkk fob foc fof foi fok foo for frb frc frd frf fri frk fro frr i-d i-f ibb ibc ibd ibf ibi ibk ibo ibr icb icc icd icf ici ick ico icr idb idc idd idf idi idk ido idr ifb ifc ifd iff ifi ifo ifr iib iic iid iif iii iio iir ikb ikc ikf iki ikk iko ikr io- iob ioc iod iof ioi ioo ior ir- irb irc ird irf iri irk iro irr kbb kbc kbd kbf kbi kbk kbo kbr kcb kcc kcd kci kck kcr kdb kdc kdf kdk kdo kdr kfc kfd kff kfi kfo kib kic kid kif kii kik kio kir kkb kkc kki kkk kkr kob koc kod kof koi kok koo kor krc krd krf kri krk kro krr o-i ob- obb obc obd obf obi obk obo obr oc- ocb occ ocd ocf oci ock oco ocr odb odc odd odf odi odo odr of- ofb ofc ofd off ofi ofo ofr oib oic oid oif oii oik oio oir okb okc okd oki okk oko okr oo- oob ooc ood oof ooi ook ooo oor or- orb orc ord orf ori ork oro orr rbb rbc rbd rbf rbi rbk rbo rbr rcb rcc rcd rcf rci rco rcr rdb rdc rdd rdf rdi rdo rdr rfb rfc rfd rff rfi rfk rfo rfr rib ric rid rif rii rik rio rir rkb rkc rkf rkk rko rob roc rod rof roi rok roo ror rrb rrc rrd rrf rri rrk rrr

bbbb bbci bbdd bbdo bbfc bbrc bcbc bccc bcci bcfc bcof bcor bd-r bdbc bddc bdii bibb bibi bibo bicc bici bick bico bidi bido bidr biff bifi biko bio- bioc bioi birb bird biri birk biro birr bobb bobi bobo bock boco bodb bodi bodo bofd boff boi- boid boii boki boko boob booc bood boof book boor bor- bord borf bori bork boro borr brcb brdo brfc bric brid brik brio brkb brob broc brod brok broo bror brrr c-bo c-cd cbbc cbcc cbcr cbdb cbdc cbdi cbdo cbfb cbfc cbid cbir cbko cbkr cbrd ccbc cccb cccc cccf ccci ccdc ccdf ccdi ccdr ccfc ccfd ccff ccfi ccic ccid ccii ccir ccob ccoc ccod ccrc ccrf ccri cd-r cdbf cddb cddr cdic cdii cdio cfbc cfbr cfcb cfcf cfco cffb cffr cfor cfrb cibc cibi cibo cicc cici cico cicr cidc cidi cidr ciff ciid ciii ciko cikr ciob cior cirb circ ciri cirk ciro cirr ckbc ckbi ckck ckco ckdo ckfi ckfr ckob ckoc ckoi ckoo ckor ckrc ckrd cobb cobi cobo cock coco codd codi cofc coff cofi coif coir cok- coko coob cood coof cook cor- corb corc cord corf cori cork coro corr crbc crcc crcr crdc crfc crib cric crif crik crkc crob croc crod crok croo cror d-bo dbcc dbfc dbfo dcbc dccb dccc dcci dcdb dcfc dcii dcio dcrk dddd ddoc ddrc dfcc dfco dfrf dfri dibb dibo dici dick dico didi dido dif- diff diii diki diko dioc dior dird dirk dirr dkdc dkid dobb dobi doci dock doco dod- dodd dodi dodo doff doid doki doko doob dood doof dook door dorc dord dorf dori dork doro dorr drbc drfc drib dric drif drob drod drof f--k fccf fcic fcii fdic fdoc ffcc ffff ffii ffrr ficc fick fico fidc fidf fido fifc fiff fifi fifo fiii fiki fior firk foci fock foco fofo foid foki food foof fook for- forb ford fori fork foro forr frbc frcc frfc frib fric frid frik frio frob ibdo ibfi ibid ibrc ibrd ibri ibro icbc icbd iccb iccc iccf icci icco iccr icdc icdd icfb icoc icod icor icrc icrf icrr idcr iddo idfc idic idid idio idir idoc idrc idrf idro ifbb ifcd ifco ific ifid ifor ifrb ifrf ifri iicd iiii iiio iioi iioo iirc ikid ikki ikko ikoo ikri iobi ioci iod- iodd iodo iofc ioii ioio ioko ioof iooi iooo iori ircc ircd irdc irdo iri- iric irid irio irki irob iroc irod irrc irri k-ci k-id kbbb kbbc kbbd kbbf kbbi kbbk kbbo kbbr kbcb kbci kbck kbco kbcr kbdb kbdf kbdi kbdo kbdr kbfb kbfc kbff kbfi kbfk kbfo kbfr kbib kbic kbid kbif kbik kbio kbkb kbkf kbkk kbko kbkr kbob kboc kbod kboi kbok kboo kbrb kbrc kbrd kbrf kbri kbrk kbro kcbc kcbd kcbf kcbi kcbk kcbr kccb kccc kccd kcci kcck kccr kcdc kcdd kcdi kcdr kcfb kcfc kcfd kcfi kcfo kcic kcid kcif kcii kcir kckc kckf kckk kcko kckr kcob kcof kcor kcrc kcri kcro kcrr kdbb kdbi kdbr kdcc