-er -up a-a a-c aaa aac aae aap aar aau aav ac- aca acc ace acp acr acu acv aea aec aee aep aer aeu aev ap- apa apc ape app apr apu apv ar- ara arc are arp arr aru arv au- aua auc aue aup aur auv av- ava avc ave avp avr avu c-- caa cac cae cap car cau cav cca ccc cce ccp ccr ccu ccv ce- cea cec cee cep cer ceu cev cpa cpc cpe cpp cpr cpu cpv cra crc cre crp crr cru crv cua cuc cue cup cur cuu cuv cva cvc cve cvp cvr cvu cvv eaa eac eae eap ear eau eav ec- eca ecc ece ecr ecu ecv eea eec eee eep eer eev ep- epa epc epe epp epr epu era erc ere erp err eru erv eu- eua euc eue eup eur euv eva evc eve evp evr evv p-p paa pac pae pap par pau pav pca pcc pce pcp pcr pcu pcv pea pec pee pep per peu pev ppa ppc ppe ppp ppr ppu ppv pra prc pre prp prr pru prv pua puc pue pup pur puu pva pvc pve pvp pvr pvu pvv ra- raa rac rae rap rar rau rav rca rcc rce rcp rcr rcu rcv re- rea rec ree rep rer reu rev rpa rpc rpe rpp rpr rpu rpv rra rrc rrp rrr rru rua ruc rue rup rur ruu ruv rva rvc rve rvp rvr rvu rvv ua- uaa uac uae uap uar uau uav uca ucc uce ucp ucr ucu ucv uea uec uee uep uer up- upa upc upe upp upr upu upv ur- ura urc ure urp urr uru uua uuc uue uur uuu uva uvc uve uvu uvv v-a v-e vaa vac vae vap var vau vav vca vcc vce vcp vcr vcu vea vec vee vep ver veu vpa vpc vpe vpp vpr vpu vra vrc vre vrp vrr vru vue vup vur vuv vva vvc vvr vvv