sre srf sri srk sro srp srr srs srt srv ss- ssc sse ssf ssi ssk sso ssp ssr sss sst ssv stc ste stf sti stk sto stp str sts stt stv svc sve svf svi svk svo svp svr svs svt svv tcc tce tcf tci tck tco tcp tcr tcs tct tcv te- tec tee tef tei tek teo tep ter tes tet tev tfc tfe tff tfi tfk tfo tfp tfr tfs tft tic tie tif tii tik tio tip tir tis tit tiv tkc tke tkk tko tkp tkr tks tkt to- toc toe tof toi tok too top tor tos tot tov tpc tpe tpf tpi tpk tpo tpp tpr tps tpt tpv trc tre trf tri trk tro trp trr trs trt trv tsc tse tsf tsi tsk tso tsp tsr tss tst tsv ttc tte ttf tti ttk tto ttp ttr tts ttt ttv tvc tve tvf tvi tvk tvo tvp tvr tvs tvt v-e vcc vce vcf vci vco vcp vcr vcs vct vec vee vef vei vek veo vep ver ves vet vfc vff vfi vfp vfr vfs vft vfv vi- vic vie vif vii vik vio vip vir vis vit viv vkp vkt voc voe vof voi vok voo vop vor vos vot vov vpc vpe vpf vpi vpk vpo vpp vpr vps vpt vrc vre vrf vri vrk vrp vrr vrs vrt vsc vse vsf vsi vsk vso vsp vsr vss vst vsv vtc vte vti vtk vto vtr vts vtt vtv vvc vvi vvo vvr vvs vvt vvv