-er -up a-a aaa aae aap aar aau aav aea aee aep aer aeu aev ap- apa ape app apr apu apv ar- ara are arp arr aru arv au- aua aue aup aur auv av- ava ave avp avr avu eaa eae eap ear eau eav eea eee eep eer eev ep- epa epe epp epr epu era ere erp err eru erv eu- eua eue eup eur euv eva eve evp evr evv p-p paa pae pap par pau pav pea pee pep per peu pev ppa ppe ppp ppr ppu ppv pra pre prp prr pru prv pua pue pup pur puu pva pve pvp pvr pvu pvv ra- raa rae rap rar rau rav re- rea ree rep rer reu rev rpa rpe rpp rpr rpu rpv rra rrp rrr rru rua rue rup rur ruu ruv rva rve rvp rvr rvu rvv ua- uaa uae uap uar uau uav uea uee uep uer up- upa upe upp upr upu upv ur- ura ure urp urr uru uua uue uur uuu uva uve uvu uvv v-a v-e vaa vae vap var vau vav vea vee vep ver veu vpa vpe vpp vpr vpu vra vre vrp vrr vru vue vup vur vuv vva vvr vvv