i-v iii iim iio iir iis im- imi imm imo ims imv io- ioi iom ioo ior ios iov ir- iri irm iro irr irs irv is- isi ism iso isr iss isv ivi ivo ivr ivs ivv m-o m-r m-v mi- mii mim mio mir mis miv mmi mmm mmo mmr mms mmv moi mom moo mor mos mov mri mrm mro mrr mrs mrv msi msm mso msr mss msv mvi mvm mvo mvr mvs mvv o-i oii oim oio oir ois oiv om- omi omm omo omr oms omv oo- ooi oom ooo oor oos oov or- ori orm oro orr ors orv os- osi osm oso osr oss osv ov- ovi ovo ovs ovv rii rim rio rir ris riv rmi rmm rmo rmr rms rmv roi rom roo ror ros rov rri rrm rrr rrs rsi rsm rso rsr rss rsv rvi rvm rvo rvr rvs rvv sii sim sio sir sis siv smi smm smo smr sms smv soi som soo sor sos sov sr- sri srm sro srr srs srv ss- ssi ssm sso ssr sss ssv svi svm svo svr svs svv vi- vii vim vio vir vis viv vm- vmi vmm vmo vmr voi vom voo vor vos vov vri vrm vrr vrs vsi vsm vso vsr vss vsv vvi vvm vvo vvr vvs vvv