-er -ic -th bbb bbc bbe bbh bbi bbk bbo bbr bbt bcb bcc bce bch bci bck bco bcr bct bcv be- beb bec bee beh bei bek beo ber bet bev bhb bhc bhe bhh bhi bhk bho bhr bht bhv bi- bib bic bie bih bii bik bio bir bit biv bkb bkc bke bkk bko bkr bkt bkv bob boc boe boh boi bok boo bor bot bov brb bre brh bri brk bro brr brt brv btb btc bte bth bti btk bto btr btt btv bvb bvc bve bvh bvi bvk bvo bvr bvt bvv c-- cbb cbc cbe cbh cbi cbk cbo cbr cbt cbv ccb ccc cce cch cci cck cco ccr cct ccv ce- ceb cec cee ceh cei cek ceo cer cet cev ch- chb chc che chh chi chk cho chr cht chv ci- cib cic cie cih cii cik cio cir cit civ ckb ckc ckh cki cko ckt co- cob coc coe coh coi cok coo cor cot cov crb crc cre crh cri crk cro crr crt crv ctb ctc cte cth cti ctk cto ctr ctt ctv cvb cvc cve cvh cvi cvk cvo cvr cvt cvv ebb ebc ebe ebh ebi ebk ebo ebr ebt ebv ec- ecb ecc ece ech eci eck eco ecr ect ecv eeb eec eee eek eeo eer eet eev ehb ehc ehe ehh ehi eho ehr eht ehv eib eic eie eii eik eio eir eit eiv ekb ekc eke ekh eki eko ekr ekt ekv eo- eob eoc eoe eoh eoi eok eoo eor eot erb erc ere erh eri erk ero err ert erv etb etc ete eth eti etk eto etr ett etv evb evc eve evh evi evo evr evt evv h-i hbb hbc hbe hbh hbi hbk hbo hbr hbt hbv hcb hcc hce hch hci hck hco hcr hct hcv he- heb hec hee heh hei hek heo her het hev hhb hhc hhe hhh hhi hhk hho hhr hht hhv hib hic hie hih hii hik hio hir hit hiv hkb hkh hki hkk hko hkr hkt hob hoc hoe hoh hoi hok hoo hor hot hov hr- hrb hrc hre hrh hri hrk hro hrr hrt hrv htb htc hte hth hti htk hto htr htt htv hv- hvb hvc hvk hvo hvr hvt hvv i-v ibb ibc ibe ibh ibi ibk ibo ibr ibt ibv icb icc ice ich ici ick ico icr ict icv ie- iec iee iei iek ier iet iev ihb ihc ihe ihh ihi ihk iho ihr iht ihv iib iic iie iih iii iio iir iit ikb ikc ike iki ikk iko ikr ikt ikv io- iob ioc ioe ioh ioi ioo ior iot iov ir- irb irc ire iri irk iro irr irt irv itb itc ite ith iti itk ito itt itv ivb ivc ive ivi ivo ivr ivt ivv k-t kbb kbc kbe kbh kbi kbk kbo kbr kcb kcc kce kch kci kck kcr kct ke- keb kec kee keh kei kek keo ker ket kev khe khh khi khk kho khr khv kib kic kie kih kii kik kio kir kit kiv kkb kkc kke kkh kki kkk kkr kkt kkv kob koc koe koh koi kok koo kor kot krc kri krk kro krr krt krv ktb ktc kte kth ktk kto ktr ktt ktv kvb kvh kvi kvk kvo kvr kvv o-i ob- obb obc obe obh obi obk obo obr obt obv oc- ocb occ och oci ock oco ocr oct ocv oeb oec oee oeh oei oeo oer oet ohc ohe ohh ohi oho ohr oht oib oic oie oii oik oio oir oit oiv okb okc oke oki okk oko okr oo- oob ooc ooh ooi ook ooo oor oot oov or- orb orc ore orh ori ork oro orr ort orv ot- otb otc ote oth oti otk oto otr ott otv ov- ovb ovc ove ovh ovi ovo ovv rbb rbc rbe rbh rbi rbk rbo rbr rbt rcb rcc rce rch rci rco rcr rct rcv re- reb rec ree reh rei rek reo rer ret rev rh- rhb rhc rhe rhh rhi rho rhr rht rhv rib ric rie rih rii rik rio rir rit riv rkb rkc rke rkk rko rkt rkv rob roc roe roh roi rok roo ror rot rov rrb rrc rrh rri rrk rrr rrt rtb rtc rte rti rtk rto rtr rtt rtv rvb rvc rve rvh rvi rvo rvr rvt rvv tbb tbc tbe tbh tbi tbk tbo tbr tbt tbv tcb tcc tce tch tci tck tco tcr tct tcv te- teb tec tee teh tei tek teo ter tet tev th- thb thc the thh thi thk tho thr tht thv tib tic tie tih tii tik tio tir tit tiv tkb tkc tke tkk tko tkr tkt to- tob toc toe toh toi tok too tor tot tov trb trc tre trh tri trk tro trr trt trv ttb ttc tte tth tti ttk tto ttr ttt ttv tvb tvc tve tvh tvi tvk tvo tvr tvt v-e vbc vbh vbi vbk vbo vbr vbv vcc vce vch vci vco vcr vct veb vec vee veh vei vek veo ver vet vh- vhb vhc vhe vhi vho vht vi- vib vic vie vii vik vio vir vit viv vkb vkt vob voc voe voh voi vok voo vor vot vov vrb vrc vre vrh vri vrk vrr vrt vtb vtc vte vti vtk vto vtr vtt vtv vvb vvc vvi vvo vvr vvt vvv