-er -up a-a aaa aad aae aan aap aar aau ad- ada add ade adn adp adr adu aea aed aee aen aep aer aeu an- ana and ane ann anp anr anu ap- apa apd ape apn app apr apu ar- ara ard are arn arp arr aru au- aua aud aue aun aup aur daa dad dae dan dap dar dau dda ddd dde ddn ddp ddr ddu de- dea ded dee den dep der deu dna dnd dne dnn dnp dnr dpa dpd dpe dpn dpp dpr dpu dra drd dre drn drp drr dru dua dud due dun dup dur eaa ead eae ean eap ear eau ed- eda edd ede edn edp edr edu eea eed eee een eep eer en- ena end ene enn enp enr enu ep- epa epd epe epn epp epr epu era erd ere ern erp err eru eu- eua eud eue eun eup eur naa nad nae nan nap nar nau nda ndd nde ndn ndp ndr ndu ne- nea ned nee nen nep ner neu nna nne nnn nnp nnu npa npd npe npn npp npr npu nra nrd nre nrn nrp nrr nru nua nud nue nun nup nur nuu p-p paa pad pae pan pap par pau pda pdd pde pdn pdp pdr pdu pea ped pee pen pep per peu pn- pna pnd pne pnn pnp pnr pnu ppa ppd ppe ppn ppp ppr ppu pra prd pre prn prp prr pru pua pud pue pun pup pur puu ra- raa rad rae ran rap rar rau rda rdd rde rdn rdp rdr rdu re- rea red ree ren rep rer reu rna rnd rnn rnp rnr rnu rpa rpd rpe rpn rpp rpr rpu rra rrd rrn rrp rrr rru rua rud rue run rup rur ruu ua- uaa uad uae uan uap uar uau uda udd ude udn udp udr udu uea ued uee uen uep uer un- una und une unn unp unr unu up- upa upd upe upn upp upr upu ur- ura urd ure urn urp urr uru uua uue uun uur uuu