-ic bbb bbc bbd bbi bbk bbo bbr bcb bcc bcd bci bck bco bcr bcv bdb bdc bdd bdi bdk bdo bdr bdv bi- bib bic bid bii bik bio bir biv bkb bkc bkk bko bkr bkv bob boc bod boi bok boo bor bov brb brd bri brk bro brr brv bvb bvc bvd bvi bvk bvo bvr bvv c-- cbb cbc cbd cbi cbk cbo cbr cbv ccb ccc ccd cci cck cco ccr ccv cdb cdc cdd cdi cdk cdo cdr cdv ci- cib cic cid cii cik cio cir civ ckb ckc ckd cki cko co- cob coc cod coi cok coo cor cov crb crc crd cri crk cro crr crv cvb cvc cvd cvi cvk cvo cvr cvv dbb dbc dbd dbi dbk dbo dbr dbv dcb dcc dcd dci dck dco dcr dcv ddb ddc ddd ddi ddk ddo ddr di- dib dic did dii dik dio dir div dkb dkc dki dkk dko dkr dob doc dod doi dok doo dor dov drb drc drd dri drk dro drr drv dvb dvc dvd dvi dvk dvr i-d i-v ibb ibc ibd ibi ibk ibo ibr ibv icb icc icd ici ick ico icr icv idb idc idd idi idk ido idr idv iib iic iid iii iio iir ikb ikc iki ikk iko ikr ikv io- iob ioc iod ioi ioo ior iov ir- irb irc ird iri irk iro irr irv ivb ivc ivd ivi ivo ivr ivv kbb kbc kbd kbi kbk kbo kbr kcb kcc kcd kci kck kcr kdb kdc kdk kdo kdr kib kic kid kii kik kio kir kiv kkb kkc kki kkk kkr kkv kob koc kod koi kok koo kor krc krd kri krk kro krr krv kvb kvi kvk kvo kvr kvv o-i ob- obb obc obd obi obk obo obr obv oc- ocb occ ocd oci ock oco ocr ocv odb odc odd odi odo odr odv oib oic oid oii oik oio oir oiv okb okc okd oki okk oko okr oo- oob ooc ood ooi ook ooo oor oov or- orb orc ord ori ork oro orr orv ov- ovb ovc ovd ovi ovo ovv rbb rbc rbd rbi rbk rbo rbr rcb rcc rcd rci rco rcr rcv rdb rdc rdd rdi rdo rdr rdv rib ric rid rii rik rio rir riv rkb rkc rkk rko rkv rob roc rod roi rok roo ror rov rrb rrc rrd rri rrk rrr rvb rvc rvd rvi rvo rvr rvv vbc vbd vbi vbk vbo vbr vbv vcc vcd vci vco vcr vdb vdc vdd vdi vdk vdo vdr vdv vi- vib vic vid vii vik vio vir viv vkb vob voc vod voi vok voo vor vov vrb vrc vrd vri vrk vrr vvb vvc vvi vvo vvr vvv

bbbb bbci bbdd bbdo bbrc bcbc bccc bcci bcor bcvo bd-r bdbc bddc bdii bibb bibi bibo bicc bici bick bico bidi bido bidr biko bio- bioc bioi birb bird biri birk biro birr bivi bobb bobi bobo bock boco bodb bodi bodo boi- boid boii boki boko boob booc bood book boor bor- bord bori bork boro borr bovi bovo brcb brdo bric brid brik brio brkb brob broc brod brok broo bror brrr brvi c-bo c-cd cbbc cbcc cbcr cbdb cbdc cbdi cbdo cbid cbir cbko cbkr cbrd cbvb cbvr ccbc cccb cccc ccci cccv ccdc ccdi ccdr ccic ccid ccii ccir cciv ccob ccoc ccod ccrc ccri ccvi ccvo cd-r cddb cddr cdic cdii cdio cdiv cdvd cdvi cibc cibi cibo cicc cici cico cicr cidc cidi cidr ciid ciii ciko cikr ciob cior cirb circ ciri cirk ciro cirr civc civo ckbc ckbi ckck ckco ckcv ckdo ckob ckoc ckoi ckoo ckor ckrc ckrd ckvo cobb cobi cobo cock coco codd codi coir cok- coko coob cood cook cor- corb corc cord cori cork coro corr covo crbc crcc crcr crdc crib cric crik crkc crob croc crod crok croo cror cvcc cvid cvii cvrd cvrr d-bo dbcc dcbc dccb dccc dcci dccv dcdb dcii dcio dciv dcrk dcvd dcvi dddd ddoc ddrc dibb dibo dici dick dico didi dido diii diiv diki diko dioc dior dird dirk dirr divd divi divo dkdc dkid dobb dobi doci dock doco dod- dodd dodi dodo doid doki doko doob dood dook door dorc dord dori dork doro dorr dovi drbc drib dric drob drod dvdr dvi- dvii dvir dvor ibdo ibid ibrc ibrd ibri ibro icbc icbd iccb iccc icci icco iccr icdc icdd icoc icod icor icrc icrr idcr iddo idic idid idio idir idoc idrc idro idvd iicd iiii iiio iioi iioo iirc ikid ikki ikko ikoo ikri iobi ioci iod- iodd iodo ioii ioio ioko iooi iooo iori ircc ircd irdc irdo iri- iric irid irio irki irob iroc irod irov irrc irri ivbv ivdr ivic ivod ivor k-ci k-id kbbb kbbc kbbd kbbi kbbk kbbo kbbr kbcb kbci kbck kbco kbcr kbdb kbdi kbdo kbdr kbdv kbib kbic kbid kbik kbio kbkb kbkk kbko kbkr kbkv kbob kboc kbod kboi kbok kboo kbov kbrb kbrc kbrd kbri kbrk kbro kbrv kbvb kbvc kbvo kbvr kcbc kcbd kcbi kcbk kcbr kccb kccc kccd kcci kcck kccr kccv kcdc kcdd kcdi kcdr kcdv kcic kcid kcii kcir kciv kckc kckk kcko kckr kckv kcob kcor kcrc kcri kcro kcrr kcrv kcvd kcvi kcvk kcvo kcvr kcvv kdbb kdbi kdbr kdbv kdcc kdcd kdco kdcr kddb kddc kddd kddi kddk kddr kdic kdio kdkb kdkd kdkk kdko kdkr kdoc kdok kdov kdrb kdri kdro kdrv kdvb kdvi kdvr kdvv kibb kibc kibi kibo kibr kicb kicc kicd kick kicr kidb kidd kidi kidk kido kidr kiic kiid kiii kiik kikc kikd kiki kikk kiko kikr kioc kiod kioi kiok kioo kirb kirc kiri kirk kiro kirr kirv kivi kkbb kkbd kkbi kkbo kkbr kkcb kkcd kkci kkck kkco kkcr kkdc kkdd kkdo kkdv kkic kkid kkik kkkk kkob kkoo kkor kkov kkrb kkrc kkrk kkro