-er a-a aaa aae aag aap aar aav aea aee aeg aep aer aev ag- aga age agg agp agr agv ap- apa ape apg app apr apv ar- ara are arg arp arr arv av- ava ave avg avp avr eaa eae eag eap ear eav eea eee eeg eep eer eev ega ege egg egp egr ep- epa epe epg epp epr era ere erg erp err erv eva eve evg evp evr evv g-p gaa gae gag gap gar gav ge- gea gee geg gep ger gev gga ggg ggp ggr ggv gpa gpe gpg gpp gpr gra gre grg grp grr grv gva gve gvg gvp gvr p-p paa pae pag pap par pav pea pee peg pep per pev pga pge pgg pgp pgr pgv ppa ppe ppg ppp ppr ppv pra pre prg prp prr prv pva pve pvg pvp pvr pvv ra- raa rae rag rap rar rav re- rea ree reg rep rer rev rga rge rgg rgp rgr rgv rpa rpe rpg rpp rpr rpv rra rrg rrp rrr rva rve rvg rvp rvr rvv v-a v-e vaa vae vag vap var vav vea vee veg vep ver vga vgg vgp vgr vpa vpe vpg vpp vpr vra vre vrg vrp vrr vva vvg vvr vvv