-er -up b-p b-u bbb bbc bbe bbh bbn bbo bbp bbr bbu bcb bcc bce bch bcn bco bcp bcr bcu be- beb bec bee beh ben beo bep ber beu bhb bhc bhe bhh bho bhp bhr bhu bnb bnc bne bnn bno bnp bnr bnu bob boc boe boh bon boo bop bor bou bpb bpc bpe bph bpn bpo bpp bpr bpu brb bre brh brn bro brp brr bru bub buc bue buh bun buo bup bur buu c-- cbb cbc cbe cbh cbn cbo cbp cbr cbu ccb ccc cce cch ccn cco ccp ccr ccu ce- ceb cec cee ceh cen ceo cep cer ceu ch- chb chc che chh chn cho chp chr chu cn- cnb cnc cne cnh cnn cno cnp cnr cnu co- cob coc coe coh con coo cop cor cou cpb cpc cpe cph cpn cpo cpp cpr cpu crb crc cre crh crn cro crp crr cru cub cuc cue cuh cun cuo cup cur cuu ebb ebc ebe ebh ebn ebo ebp ebr ebu ec- ecb ecc ece ech ecn eco ecr ecu eeb eec eee een eeo eep eer ehb ehc ehe ehh ehn eho ehp ehr ehu en- enb enc ene enh enn eno enp enr enu eo- eob eoc eoe eoh eon eoo eop eor eou ep- epb epc epe eph epn epo epp epr epu erb erc ere erh ern ero erp err eru eu- eub euc eue eun eup eur hbb hbc hbe hbh hbn hbo hbp hbr hbu hcb hcc hce hch hcn hco hcp hcr he- heb hec hee heh hen heo hep her heu hhb hhc hhe hhh hhn hho hhp hhr hhu hnb hnc hne hnh hnn hno hnu hob hoc hoe hoh hon hoo hop hor hou hpb hpc hpe hph hpn hpo hpp hpr hpu hr- hrb hrc hre hrh hrn hro hrp hrr hru hub huc hue huh hun huo hup hur huu nbb nbc nbe nbn nbo nbp nbr nbu ncb ncc nce nch ncn nco ncp ncr ncu ne- neb nec nee neh nen neo nep ner neu nhb nhc nhe nhh nhn nhp nhr nhu nnb nnc nne nnh nnn nno nnp nnu no- nob noc noe noh non noo nop nor nou npb npc npe nph npn npo npp npr npu nrb nrc nre nrn nro nrp nrr nru nub nuc nue nuh nun nuo nup nur nuu ob- obb obc obe obh obn obo obp obr obu oc- ocb occ och ocn oco ocp ocr ocu oeb oec oee oeh oen oeo oep oer ohc ohe ohh ohn oho ohp ohr ohu on- onb onc one onh onn ono onp onr onu oo- oob ooc ooh oon ooo oop oor op- opb opc ope oph opn opo opp opr or- orb orc ore orh orn oro orp orr oru ou- ouc oue ouh oun ouo oup our p-p pbb pbc pbe pbn pbo pbp pbr pbu pcb pcc pce pch pcn pco pcp pcr pcu peb pec pee peh pen peo pep per peu phb phc phe phn pho php phr phu pn- pnb pnc pne pnh pnn pno pnp pnr pnu pob poc poe poh pon poo pop por pou ppb ppc ppe pph ppn ppo ppp ppr ppu prb prc pre prh prn pro prp prr pru pub puc pue puh pun pup pur puu rbb rbc rbe rbh rbn rbo rbp rbr rbu rcb rcc rce rch rcn rco rcp rcr rcu re- reb rec ree reh ren reo rep rer reu rh- rhb rhc rhe rhh rhn rho rhp rhr rhu rnb rnc rnh rnn rno rnp rnr rnu rob roc roe roh ron roo rop ror rou rpb rpc rpe rph rpn rpo rpp rpr rpu rrb rrc rrh rrn rrp rrr rru rub ruc rue ruh run ruo rup rur ruu ubb ubc ube ubh ubn ubo ubp ubr ubu ucb ucc uce uch ucn uco ucp ucr ucu ueb uec uee ueh uen uep uer uhb uhc uhe uhh uho uhp uhr uhu un- unb unc une unh unn uno unp unr unu uob uoc uoe uon uoo uop uor up- upb upc upe uph upn upo upp upr upu ur- urb urc ure urn uro urp urr uru uuc uue uun uur uuu