-er -up a-a a-c aaa aac aae aao aap aar aau ac- aca acc ace aco acp acr acu aea aec aee aeo aep aer aeu aoa aoc aoe aoo aop aor aou ap- apa apc ape apo app apr apu ar- ara arc are aro arp arr aru au- aua auc aue auo aup aur c-- caa cac cae cao cap car cau cca ccc cce cco ccp ccr ccu ce- cea cec cee ceo cep cer ceu co- coa coc coe coo cop cor cou cpa cpc cpe cpo cpp cpr cpu cra crc cre cro crp crr cru cua cuc cue cuo cup cur cuu eaa eac eae eao eap ear eau ec- eca ecc ece eco ecr ecu eea eec eee eeo eep eer eo- eoa eoc eoe eoo eop eor eou ep- epa epc epe epo epp epr epu era erc ere ero erp err eru eu- eua euc eue eup eur oaa oac oae oao oap oar oau oc- oca occ oco ocp ocr ocu oea oec oee oeo oep oer oo- ooa ooc ooo oop oor op- opa opc ope opo opp opr or- ora orc ore oro orp orr oru ou- oua ouc oue ouo oup our p-p paa pac pae pao pap par pau pca pcc pce pco pcp pcr pcu pea pec pee peo pep per peu poa poc poe poo pop por pou ppa ppc ppe ppo ppp ppr ppu pra prc pre pro prp prr pru pua puc pue pup pur puu ra- raa rac rae rao rap rar rau rca rcc rce rco rcp rcr rcu re- rea rec ree reo rep rer reu roa roc roe roo rop ror rou rpa rpc rpe rpo rpp rpr rpu rra rrc rrp rrr rru rua ruc rue ruo rup rur ruu ua- uaa uac uae uao uap uar uau uca ucc uce uco ucp ucr ucu uea uec uee uep uer uoa uoc uoe uoo uop uor up- upa upc upe upo upp upr upu ur- ura urc ure uro urp urr uru uua uuc uue uur uuu