-ic b-u bbb bbc bbi bbo bbr bbt bbu bbx bcb bcc bci bco bcr bct bcu bcx bi- bib bic bii bio bir bit biu bix bob boc boi boo bor bot bou box brb bri bro brr brt bru brx btb btc bti bto btr btt btu btx bub buc bui buo bur but buu bux bxb bxi bxo bxx c-- cbb cbc cbi cbo cbr cbt cbu cbx ccb ccc cci cco ccr cct ccu ccx ci- cib cic cii cio cir cit ciu cix co- cob coc coi coo cor cot cou cox crb crc cri cro crr crt cru crx ctb ctc cti cto ctr ctt ctu ctx cub cuc cui cuo cur cut cuu cxc cxi cxo cxr cxt cxx ibb ibc ibi ibo ibr ibt ibu ibx icb icc ici ico icr ict icu iib iic iii iio iir iit iiu iix io- iob ioc ioi ioo ior iot iou ir- irb irc iri iro irr irt iru irx itb itc iti ito itt itu itx iu- iub iuc iui iur iut ixc ixi o-i ob- obb obc obi obo obr obt obu obx oc- ocb occ oci oco ocr oct ocu ocx oib oic oii oio oir oit oiu oo- oob ooc ooi ooo oor oot oox or- orb orc ori oro orr ort oru orx ot- otb otc oti oto otr ott otu ou- ouc oui ouo our out ox- oxb oxc oxi oxo oxt oxx rbb rbc rbi rbo rbr rbt rbu rbx rcb rcc rci rco rcr rct rcu rcx rib ric rii rio rir rit rix rob roc roi roo ror rot rou rox rrb rrc rri rrr rrt rru rtb rtc rti rto rtr rtt rtu rtx rub ruc rui ruo rur rut ruu rux rxr t-x tbb tbc tbi tbo tbr tbt tbu tcb tcc tci tco tcr tct tcu tcx tib tic tii tio tir tit tiu tix to- tob toc toi too tor tot tou tox trb trc tri tro trr trt tru trx ttb ttc tti tto ttr ttt ttu ttx tub tuc tui tuo tur tut tuu tux txi txt txu ubb ubc ubi ubo ubr ubt ubu ubx ucb ucc uci uco ucr uct ucu uib uic uii uio uir uit uiu uob uoc uoo uor uot uox ur- urb urc uri uro urr urt uru urx utb utc uti uto utr utt utu utx uuc uur uut uuu uxb uxc uxo uxr uxt uxu xbc xbr xbx xcb xci xcr xcx xic xii xio xit xiu xix xoc xoi xoo xor xot xox xrc xrt xrx xtc xti xtr xtx xui xxi xxo xxx

bbbb bbci bbox bbrc bcbc bccc bcci bcit bcor bcru bctc bcuc bibb bibi bibo bicc bici bico bio- bioc bioi biot biou biox birb biri biro birr birt biru birx bitc bito bitt bitu bitx bixi bobb bobi bobo bobu boco bocu boi- boii boit boiu boob booc boor boot boox bor- bori boro borr bort boru botb boti boto bott bour bout brcb bric brio brit brix brob broc broo bror brot brou brox brrr brtc bruc brut brux btcc btcx btob btor btrc btrt bttb bubb bubi bubo bubu bucc buci buco bucu buic buir buit buiu buix bur- burb buri buro burr burt buru but- buti buto butt c-bo cbbc cbcc cbcr cbct cbcu cbir cbit cbot cbox cbrt cbtc cbux ccbc cccb cccc ccci cccu ccic ccii ccir ccix ccob ccoc ccrc ccri ccrt cctb cctc cctt ccuc ccut ccxi cibc cibi cibo cicc cici cico cicr cict cicu ciii ciit ciob cior cirb circ ciri ciro cirr cirt citb citi cito citt citu ciuc cixi cobb cobi cobo cobu coco coct cocu coir coit coix coob coot cor- corb corc cori coro corr cort cotb cotc coti coto cott cotu coub cour cout coux crbc crbu crcc crcr crib cric crit criu crob croc croo cror crot crrt crtc crub crut crux ctbi ctic ctor ctot ctrc cub- cubb cubi cucc cuci cui- cuir cuit curb curi curo curr curt cut- cutc cuto cutt cxii cxix cxro cxxi cxxx ibot ibox ibrc ibri ibro ibtb ibtc icbc iccb iccc icci icco iccr icct iccu icoc icor icrc icrr icrt icru icub iiii iiio iiit iioi iioo iirc iitr iitt iiuc iobi ioci ioii ioio ioit iooi iooo iori ioto ircc ircu ircx iri- iric irio irix irob iroc irrc irri irti itic itoi itoo itor itou itri itto itur iucc iuiu ixxi obbo obit obix oboi obor obot obox obri obro ocbc occc occi occt ocro ocrr oct- octi octo ocur oici oiii oirt oitc oiti oobi oocr oooo oort ootb orbb orbi orbo orbu orci orco ori- oric orio orit orix oro- oror orot orri orro ortc orto orub otic otit oto- otoo otor otro otti otto ottu otur oucc ouii ouir ouit our- ouro ourt out- outb outi outo ouu- oxi- oxic oxo- oxox oxxo rbbb rbbr rcbc rcbo rccb rccc rcic rctc rcti rib- ribo ribu ricc rico rict riot riou riri riti rito ritt ritu rixc rixo rob- robb robi robo robt robu rocc roco roio roir roit roiu roob rooi roor root roox rorc rori roro rort roru rotc roti roto rotr rott roub rout roux roxo rrrr rtcc rubb rubi rubu ruci ruct ruit rurc ruri ruro ruru ruti ruto rutt rutu tbcb tbcc tbit tbox tbrb tccc tccu tctc tibi tibu ticc tico tiit tiiu tiou tirb tiri tiro tirr tiru titc titi tito titt titu tixt tobi tobo tobt tobu toci toco toit toor toot torc tori toro torr tort toru torx totc toti toto totr tott toui tour tout tox- toxi toxo toxt trcc tri- trib tric trio trit trix troc troi troo trot trou trox trtc trtr trub truc trut truu trux ttbb tttt tubb tubo tubr tubu tucc tuco tuit tuiu tuix tuor turb turc turi turo turr turt turu tuti tuto tutt tutu tuuo txii txtr ubbi ubbo