-er bbb bbe bbh bbi bbk bbo bbr bbs be- beb bee beh bei bek beo ber bes bev bhb bhe bhh bhi bhk bho bhr bhs bhv bi- bib bie bih bii bik bio bir bis biv bkb bke bkk bko bkr bks bkv bob boe boh boi bok boo bor bos bov brb bre brh bri brk bro brr brs brv bsb bse bsh bsi bsk bso bsr bss bsv bvb bve bvh bvi bvk bvo bvr bvs bvv ebb ebe ebh ebi ebk ebo ebr ebs ebv eeb eee eek eeo eer ees eev ehb ehe ehh ehi eho ehr ehs ehv eib eie eii eik eio eir eis eiv ekb eke ekh eki eko ekr eks ekv eo- eob eoe eoh eoi eok eoo eor eos erb ere erh eri erk ero err ers erv es- esb ese esh esi esk eso esr ess esv evb eve evh evi evo evr evs evv h-i hbb hbe hbh hbi hbk hbo hbr hbs hbv he- heb hee heh hei hek heo her hes hev hhb hhe hhh hhi hhk hho hhr hhs hhv hib hie hih hii hik hio hir his hiv hkb hkh hki hkk hko hkr hks hob hoe hoh hoi hok hoo hor hos hov hr- hrb hre hrh hri hrk hro hrr hrs hrv hsb hse hsh hsi hsk hsr hss hsv hv- hvb hvk hvo hvr hvs hvv i-v ibb ibe ibh ibi ibk ibo ibr ibs ibv ie- iee iei iek ier ies iev ihb ihe ihh ihi ihk iho ihr ihs ihv iib iie iih iii iio iir iis ikb ike iki ikk iko ikr iks ikv io- iob ioe ioh ioi ioo ior ios iov ir- irb ire iri irk iro irr irs irv is- isb ise ish isi isk iso isr iss isv ivb ive ivi ivo ivr ivs ivv kbb kbe kbh kbi kbk kbo kbr kbs ke- keb kee keh kei kek keo ker kes kev khe khh khi khk kho khr khs khv kib kie kih kii kik kio kir kis kiv kkb kke kkh kki kkk kkr kks kkv kob koe koh koi kok koo kor kos kri krk kro krr krs krv ksb kse ksh ksi ksk kso ksr kss ksv kvb kvh kvi kvk kvo kvr kvs kvv o-i ob- obb obe obh obi obk obo obr obs obv oeb oee oeh oei oeo oer oes ohe ohh ohi oho ohr ohs oib oie oii oik oio oir ois oiv okb oke oki okk oko okr oks oo- oob ooh ooi ook ooo oor oos oov or- orb ore orh ori ork oro orr ors orv os- osb ose osh osi osk oso osr oss osv ov- ovb ove ovh ovi ovo ovs ovv rbb rbe rbh rbi rbk rbo rbr rbs re- reb ree reh rei rek reo rer res rev rh- rhb rhe rhh rhi rho rhr rhs rhv rib rie rih rii rik rio rir ris riv rkb rke rkk rko rks rkv rob roe roh roi rok roo ror ros rov rrb rrh rri rrk rrr rrs rsb rse rsh rsi rsk rso rsr rss rsv rvb rve rvh rvi rvo rvr rvs rvv sbb sbe sbh sbi sbk sbo sbr sbs sbv se- seb see seh sei sek seo ser ses sev sh- shb she shh shi shk sho shr shs shv sib sie sih sii sik sio sir sis siv sk- skb ske skh ski skk sko skr sks sob soe soh soi sok soo sor sos sov sr- srb sre srh sri srk sro srr srs srv ss- ssb sse ssh ssi ssk sso ssr sss ssv svb sve svi svk svo svr svs svv v-e vbh vbi vbk vbo vbr vbs vbv veb vee veh vei vek veo ver ves vh- vhb vhe vhi vho vhs vi- vib vie vii vik vio vir vis viv vkb vob voe voh voi vok voo vor vos vov vrb vre vrh vri vrk vrr vrs vsb vse vsh vsi vsk vso vsr vss vsv vvb vvi vvo vvr vvs vvv