-er -up a-a a-c aaa aac aae aan aap aar aau ac- aca acc ace acn acp acr acu aea aec aee aen aep aer aeu an- ana anc ane ann anp anr anu ap- apa apc ape apn app apr apu ar- ara arc are arn arp arr aru au- aua auc aue aun aup aur c-- caa cac cae can cap car cau cca ccc cce ccn ccp ccr ccu ce- cea cec cee cen cep cer ceu cn- cna cnc cne cnn cnp cnr cnu cpa cpc cpe cpn cpp cpr cpu cra crc cre crn crp crr cru cua cuc cue cun cup cur cuu eaa eac eae ean eap ear eau ec- eca ecc ece ecn ecr ecu eea eec eee een eep eer en- ena enc ene enn enp enr enu ep- epa epc epe epn epp epr epu era erc ere ern erp err eru eu- eua euc eue eun eup eur naa nac nae nan nap nar nau nca ncc nce ncn ncp ncr ncu ne- nea nec nee nen nep ner neu nna nnc nne nnn nnp nnu npa npc npe npn npp npr npu nra nrc nre nrn nrp nrr nru nua nuc nue nun nup nur nuu p-p paa pac pae pan pap par pau pca pcc pce pcn pcp pcr pcu pea pec pee pen pep per peu pn- pna pnc pne pnn pnp pnr pnu ppa ppc ppe ppn ppp ppr ppu pra prc pre prn prp prr pru pua puc pue pun pup pur puu ra- raa rac rae ran rap rar rau rca rcc rce rcn rcp rcr rcu re- rea rec ree ren rep rer reu rna rnc rnn rnp rnr rnu rpa rpc rpe rpn rpp rpr rpu rra rrc rrn rrp rrr rru rua ruc rue run rup rur ruu ua- uaa uac uae uan uap uar uau uca ucc uce ucn ucp ucr ucu uea uec uee uen uep uer un- una unc une unn unp unr unu up- upa upc upe upn upp upr upu ur- ura urc ure urn urp urr uru uua uuc uue uun uur uuu