-er -th b-u bbb bbc bbe bbh bbk bbo bbr bbt bbu bcb bcc bce bch bck bco bcr bct bcu be- beb bec bee beh bek beo ber bet beu bhb bhc bhe bhh bhk bho bhr bht bhu bkb bkc bke bkk bko bkr bkt bob boc boe boh bok boo bor bot bou brb bre brh brk bro brr brt bru btb btc bte bth btk bto btr btt btu bub buc bue buh buk buo bur but buu c-- cbb cbc cbe cbh cbk cbo cbr cbt cbu ccb ccc cce cch cck cco ccr cct ccu ce- ceb cec cee ceh cek ceo cer cet ceu ch- chb chc che chh chk cho chr cht chu ckb ckc ckh cko ckt co- cob coc coe coh cok coo cor cot cou crb crc cre crh crk cro crr crt cru ctb ctc cte cth ctk cto ctr ctt ctu cub cuc cue cuh cuk cuo cur cut cuu ebb ebc ebe ebh ebk ebo ebr ebt ebu ec- ecb ecc ece ech eck eco ecr ect ecu eeb eec eee eek eeo eer eet ehb ehc ehe ehh eho ehr eht ehu ekb ekc eke ekh eko ekr ekt eku eo- eob eoc eoe eoh eok eoo eor eot eou erb erc ere erh erk ero err ert eru etb etc ete eth etk eto etr ett etu eu- eub euc eue eur eut hbb hbc hbe hbh hbk hbo hbr hbt hbu hcb hcc hce hch hck hco hcr hct he- heb hec hee heh hek heo her het heu hhb hhc hhe hhh hhk hho hhr hht hhu hkb hkh hkk hko hkr hkt hku hob hoc hoe hoh hok hoo hor hot hou hr- hrb hrc hre hrh hrk hro hrr hrt hru htb htc hte hth htk hto htr htt hub huc hue huh huk huo hur hut huu k-t kbb kbc kbe kbh kbk kbo kbr kbu kcb kcc kce kch kck kcr kct kcu ke- keb kec kee keh kek keo ker ket khe khh khk kho khr khu kkb kkc kke kkh kkk kkr kkt kku kob koc koe koh kok koo kor kot kou krc krk kro krr krt kru ktb ktc kte kth ktk kto ktr ktt ktu kub kuc kue kuh kuk kur kut kuu ob- obb obc obe obh obk obo obr obt obu oc- ocb occ och ock oco ocr oct ocu oeb oec oee oeh oeo oer oet ohc ohe ohh oho ohr oht ohu okb okc oke okk oko okr oku oo- oob ooc ooh ook ooo oor oot or- orb orc ore orh ork oro orr ort oru ot- otb otc ote oth otk oto otr ott otu ou- ouc oue ouh ouk ouo our out rbb rbc rbe rbh rbk rbo rbr rbt rbu rcb rcc rce rch rco rcr rct rcu re- reb rec ree reh rek reo rer ret reu rh- rhb rhc rhe rhh rho rhr rht rhu rkb rkc rke rkk rko rkt rku rob roc roe roh rok roo ror rot rou rrb rrc rrh rrk rrr rrt rru rtb rtc rte rtk rto rtr rtt rtu rub ruc rue ruh ruk ruo rur rut ruu tbb tbc tbe tbh tbk tbo tbr tbt tbu tcb tcc tce tch tck tco tcr tct tcu te- teb tec tee teh tek teo ter tet teu th- thb thc the thh thk tho thr tht thu tkb tkc tke tkk tko tkr tkt to- tob toc toe toh tok too tor tot tou trb trc tre trh trk tro trr trt tru ttb ttc tte tth ttk tto ttr ttt ttu tub tuc tue tuh tuk tuo tur tut tuu ubb ubc ube ubh ubk ubo ubr ubt ubu ucb ucc uce uch uck uco ucr uct ucu ueb uec uee ueh uer uet uhb uhc uhe uhh uho uhr uht uhu ukb ukc uke ukk ukr uku uob uoc uoe uok uoo uor uot ur- urb urc ure urk uro urr urt uru utb utc ute uth utk uto utr utt utu uuc uue uur uut uuu

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