-er -ey eee eer eet eev eex eey ere err ert erv ery ete etr ett etv etx ety eve evr evt evv evy ex- exe exr ext exx exy eye eyr eyt re- ree rer ret rev rex rey rrr rrt rte rtr rtt rtv rtx rty rve rvr rvt rvv rvy rxr ry- rye ryr ryy t-x te- tee ter tet tev tex tey tre trr trt trv trx try tte ttr ttt ttv ttx tty tve tvr tvt tvx tvy txe txt tye tyr tyt v-e vee ver vet vex vey vre vrr vrt vry vte vtr vtt vtv vtx vty vvr vvt vvv vxr vxv vye vyt xee xer xet xev xex xrt xrx xry xtr xtv xtx xty xvt xxv xxx xxy xyr xyy yee yer yet yev yex yey yre yrt yte ytr ytt ytv yve yvr yvy yxe yxy yye yyt yyy