-ic b-p bbb bbc bbd bbi bbo bbp bbr bbt bcb bcc bcd bci bco bcp bcr bct bdb bdc bdd bdi bdo bdp bdr bdt bi- bib bic bid bii bio bip bir bit bob boc bod boi boo bop bor bot bpb bpc bpd bpi bpo bpp bpr bpt brb brd bri bro brp brr brt btb btc btd bti bto btp btr btt c-- cbb cbc cbd cbi cbo cbp cbr cbt ccb ccc ccd cci cco ccp ccr cct cdb cdc cdd cdi cdo cdp cdr cdt ci- cib cic cid cii cio cip cir cit co- cob coc cod coi coo cop cor cot cpb cpc cpd cpi cpo cpp cpr cpt crb crc crd cri cro crp crr crt ctb ctc ctd cti cto ctp ctr ctt dbb dbc dbd dbi dbo dbp dbr dbt dcb dcc dcd dci dco dcp dcr dct ddb ddc ddd ddi ddo ddp ddr ddt di- dib dic did dii dio dip dir dit dob doc dod doi doo dop dor dot dpb dpc dpd dpi dpo dpp dpr dpt drb drc drd dri dro drp drr drt dtb dtc dtd dti dto dtp dtr dtt i-d ibb ibc ibd ibi ibo ibp ibr ibt icb icc icd ici ico icp icr ict idb idc idd idi ido idp idr idt iib iic iid iii iio iip iir iit io- iob ioc iod ioi ioo iop ior iot ipb ipc ipd ipi ipo ipp ipr ipt ir- irb irc ird iri iro irp irr irt itb itc itd iti ito itp itt o-i ob- obb obc obd obi obo obp obr obt oc- ocb occ ocd oci oco ocp ocr oct odb odc odd odi odo odp odr odt oib oic oid oii oio oip oir oit oo- oob ooc ood ooi ooo oop oor oot op- opb opc opd opi opo opp opr opt or- orb orc ord ori oro orp orr ort ot- otb otc otd oti oto otp otr ott p-p pbb pbc pbd pbi pbo pbp pbr pbt pcb pcc pcd pci pco pcp pcr pct pdb pdc pdd pdi pdo pdp pdr pdt pib pic pid pii pio pip pir pit pob poc pod poi poo pop por pot ppb ppc ppd ppi ppo ppp ppr ppt prb prc prd pri pro prp prr prt pt- ptb ptc ptd pti pto ptp ptr ptt rbb rbc rbd rbi rbo rbp rbr rbt rcb rcc rcd rci rco rcp rcr rct rdb rdc rdd rdi rdo rdp rdr rdt rib ric rid rii rio rip rir rit rob roc rod roi roo rop ror rot rpb rpc rpd rpi rpo rpp rpr rpt rrb rrc rrd rri rrp rrr rrt rtb rtc rtd rti rto rtp rtr rtt tbb tbc tbd tbi tbo tbp tbr tbt tcb tcc tcd tci tco tcp tcr tct tdb tdc tdd tdi tdo tdp tdr tdt tib tic tid tii tio tip tir tit to- tob toc tod toi too top tor tot tpb tpc tpd tpi tpo tpp tpr tpt trb trc trd tri tro trp trr trt ttb ttc ttd tti tto ttp ttr ttt

bbbb bbci bbdd bbdo bbpr bbrc bcbc bcbp bccc bcci bcit bcor bcpp bctc bd-r bdbc bddc bdii bdpc bibb bibi bibo bicc bici bico bidi bido bidr bio- bioc bioi biot bipp birb bird biri biro birr birt bitc bitd bito bitt bobb bobi bobo boco bodb bodi bodo boi- boid boii boit boob booc bood boop boor boot bopp bor- bord bori boro borr bort botb botd boti boto bott bpcp bpot bprc bprd bpti brcb brdo brdt bric brid brio brit brob broc brod broo bror brot brrr brtc btbp btcc btdt btob btor btrc btrt bttb c-bo c-cd cbbc cbcc cbcp cbcr cbct cbdb cbdc cbdi cbdo cbid cbir cbit cbot cbpc cbpp cbrd cbrt cbtc ccbc cccb cccc ccci cccp ccdc ccdi ccdp ccdr ccic ccid ccii ccip ccir ccob ccoc ccod ccpp ccpr ccrc ccri ccrp ccrt cctb cctc cctt cd-r cddb cddr cdic cdii cdio cdot cibc cibi cibo cicc cici cico cicr cict cidc cidi cidp cidr cidt ciid ciii ciit ciob cior cipo cipp cirb circ ciri ciro cirr cirt citb citi cito citp citt cobb cobi cobo coco cocp coct codd codi coip coir coit coob cood coop coot copd copi copo copp copr copt cor- corb corc cord cori coro corp corr cort cotb cotc coti coto cott cpbc cpic cpio cppd cpri cprt cptp cptr crbc crcc crcr crdc crib cric crip crit crob croc crod croo crop cror crot crpc crrt crtc crtp ctbi ctcp ctic ctor ctot ctpo ctpp ctrc ctrp d-bo dbcc dbcp dbit dbpc dbpd dbtt dcbc dccb dccc dcci dccp dcct dcdb dcii dcio dcop dcpo dctc dddd ddoc ddot ddpo ddrc dibb dibo dibp dici dico dict didi dido diii dioc diop dior diot dipc dipo dipp dipt dird dirr dirt diti dito ditt dobb dobi doci doco doct dod- dodd dodi dodo doid doit doob dood doop door doot dopo dopp dopr dopt dorc dord dori doro dorp dorr dort dotd doti doto dott dpbc dpci dpcp dpdt dppc drbc drib dric drip drit drob drod drop drot dtcc dtdp dtor dtot dttp ibdo ibid ibot ibrc ibrd ibri ibro ibtb ibtc icbc icbd icbp iccb iccc icci icco iccp iccr icct icdc icdd icdp icoc icod icor icpc icpd icpo icrc icrr icrt ictp idcr iddo idic idid idio idir idoc idrc idro idtp iicd iiii iiio iiit iioi iioo iiop iirc iitr iitt iobi ioci iocp iod- iodd iodo ioii ioio ioit iooi iooo iori ioto ipcc ipct ipdc ipdi ipid ipod ipop ippc ippo ippr ipri iptc ipto irbp ircc ircd irdc irdo irdp iri- iric irid irio irip irob iroc irod irop irpc irrc irri irti irtp itdo itic itoi itoo itor itpc itri itto obbo obdt obid obit oboi obor obot obri obro obtd ocbc occc occi