-er -ey b-u bbb bbe bbf bbr bbs bbu bby be- beb bee bef ber bes beu bev bey bfb bfe bff bfr bfs bfu bfv bfy brb bre brf brr brs bru brv bry bsb bse bsf bsr bss bsu bsv bsy bub bue buf bur bus buu buy bvb bve bvr bvs bvu bvv by- bye byf byr bys byu ebb ebe ebf ebr ebs ebu ebv eby eeb eee eef eer ees eev eey ef- efb efe eff efr efs erb ere erf err ers eru erv ery es- esb ese esf esr ess esu esv esy eu- eub eue euf eur eus euv evb eve evf evr evs evv evy eye eyr eys fbb fbe fbf fbr fbs fbu feb fee fef fer fes feu fev fey ffe fff ffr ffs ffu ffv ffy frb fre frf frr frs fru fry fsb fse fsf fsr fss fsu fsv fub fue fuf fur fus fuu fuv fy- fyb fye rbb rbe rbf rbr rbs rbu re- reb ree ref rer res reu rev rey rfb rfe rff rfr rfs rfu rfv rrb rrf rrr rrs rru rsb rse rsf rsr rss rsu rsv rub rue ruf rur rus ruu ruv ruy rvb rve rvf rvr rvs rvu rvv rvy ry- rye ryf ryr rys ryu ryy sbb sbe sbf sbr sbs sbu sbv sby se- seb see sef ser ses seu sev sey sfb sfe sff sfr sfs sfu sfv sr- srb sre srf srr srs srv sry ss- ssb sse ssf ssr sss ssu ssv sub sue suf sur sus suu suv suy svb sve svf svr svs svu svv svy sy- syb sye syr sys syu ubb ube ubf ubr ubs ubu ubv uby ueb uee uef uer ues uey ufe uff ufr ufs ufu ufv ur- urb ure urf urr urs uru ury usb use usf usr uss usu usv uue uur uus uuu uvb uve uvf uvs uvu uvv uys uyu v-e vbr vbs vbv veb vee vef ver ves veu vey vfb vff vfr vfs vfu vfv vrb vre vrf vrr vrs vru vry vsb vse vsf vsr vss vsu vsv vue vur vus vuv vvb vvr vvs vvv vye vyf ybe ybf ybr ybs yby yeb yee yef yer yes yev yey yfe yff yfr yfs yfu yre yrf yrs yru ysb yse ysr yss ysu ysy yue yur yus yuu yuv yuy yve yvr yvy yyb yye yyf yys yyu yyy