-er -up a-a a-b aaa aab aad aae aan aao aap aar aau ab- aba abb abd abe abn abo abp abr abu ad- ada adb add ade adn ado adp adr adu aea aeb aed aee aen aeo aep aer aeu an- ana anb and ane ann ano anp anr anu aoa aob aod aoe aon aoo aop aor aou ap- apa apb apd ape apn apo app apr apu ar- ara arb ard are arn aro arp arr aru au- aua aub aud aue aun auo aup aur b-p b-u baa bab bad bae ban bao bap bar bau bba bbb bbd bbe bbn bbo bbp bbr bbu bda bdb bdd bde bdo bdp bdr bdu be- bea beb bed bee ben beo bep ber beu bna bnb bnd bne bnn bno bnp bnr bnu boa bob bod boe bon boo bop bor bou bpa bpb bpd bpe bpn bpo bpp bpr bpu bra brb brd bre brn bro brp brr bru bua bub bud bue bun buo bup bur buu daa dab dad dae dan dao dap dar dau dba dbb dbd dbe dbn dbo dbp dbr dbu dda ddb ddd dde ddn ddo ddp ddr ddu de- dea deb ded dee den deo dep der deu dna dnb dnd dne dnn dno dnp dnr doa dob dod doe don doo dop dor dou dpa dpb dpd dpe dpn dpo dpp dpr dpu dra drb drd dre drn dro drp drr dru dua dub dud due dun duo dup dur eaa eab ead eae ean eao eap ear eau eba ebb ebd ebe ebn ebo ebp ebr ebu ed- eda edb edd ede edn edo edp edr edu eea eeb eed eee een eeo eep eer en- ena enb end ene enn eno enp enr enu eo- eoa eob eod eoe eon eoo eop eor eou ep- epa epb epd epe epn epo epp epr epu era erb erd ere ern ero erp err eru eu- eua eub eud eue eun eup eur naa nab nad nae nan nao nap nar nau nba nbb nbd nbe nbn nbo nbp nbr nbu nda ndb ndd nde ndn ndo ndp ndr ndu ne- nea neb ned nee nen neo nep ner neu nna nnb nne nnn nno nnp nnu no- noa nob nod noe non noo nop nor nou npa npb npd npe npn npo npp npr npu nra nrb nrd nre nrn nro nrp nrr nru nua nub nud nue nun nuo nup nur nuu oaa oab oad oae oan oao oap oar oau ob- oba obb obd obe obn obo obp obr obu oda odb odd ode odn odo odp odr odu oea oeb oed oee oen oeo oep oer on- ona onb ond one onn ono onp onr onu oo- ooa oob ood oon ooo oop oor op- opa opb opd ope opn opo opp opr or- ora orb ord ore orn oro orp orr oru ou- oua oud oue oun ouo oup our p-p paa pab pad pae pan pao pap par pau pba pbb pbd pbe pbn pbo pbp pbr pbu pda pdb pdd pde pdn pdo pdp pdr pdu pea peb ped pee pen peo pep per peu pn- pna pnb pnd pne pnn pno pnp pnr pnu poa pob pod poe pon poo pop por pou ppa ppb ppd ppe ppn ppo ppp ppr ppu pra prb prd pre prn pro prp prr pru pua pub pud pue pun pup pur puu ra- raa rab rad rae ran rao rap rar rau rba rbb rbd rbe rbn rbo rbp rbr rbu rda rdb rdd rde rdn rdo rdp rdr rdu re- rea reb red ree ren reo rep rer reu rna rnb rnd rnn rno rnp rnr rnu roa rob rod roe ron roo rop ror rou rpa rpb rpd rpe rpn rpo rpp rpr rpu rra rrb rrd rrn rrp rrr rru rua rub rud rue run ruo rup rur ruu ua- uaa uab uad uae uan uao uap uar uau uba ubb ube ubn ubo ubp ubr ubu uda udb udd ude udn udo udp udr udu uea ueb ued uee uen uep uer un- una unb und une unn uno unp unr unu uoa uob uod uoe uon uoo uop uor up- upa upb upd upe upn upo upp upr upu ur- ura urb urd ure urn uro urp urr uru uua uue uun uur uuu