fff ffi ffr fft ffv ffy fif fii fir fit frf fri frr frt fry ftf fti ftr ftt ftv fty fvt fy- fyi i-f i-v iff ifi ifr ift ify iif iii iir iit ir- irf iri irr irt irv iry itf iti itt itv ity ivf ivi ivr ivt ivv ivy iyr iyt iyy rff rfi rfr rft rfv rif rii rir rit riv riy rrf rri rrr rrt rtf rti rtr rtt rtv rty rvf rvi rvr rvt rvv rvy ry- ryf ryr ryy tff tfi tfr tft tif tii tir tit tiv tiy trf tri trr trt trv try ttf tti ttr ttt ttv tty tvf tvi tvr tvt tvy tyf tyr tyt vff vfi vfr vft vfv vi- vif vii vir vit viv viy vrf vri vrr vrt vry vti vtr vtt vtv vty vvi vvr vvt vvv vyf vyt yff yfr yft yif yii yir yit yrf yrt ytf ytr ytt ytv yvi yvr yvy yyf yyt yyy