i-v iii iim iio iis im- imi imm imo ims imv io- ioi iom ioo ios iov is- isi ism iso iss isv ivi ivo ivs ivv m-o m-v mi- mii mim mio mis miv mmi mmm mmo mms mmv moi mom moo mos mov msi msm mso mss msv mvi mvm mvo mvs mvv o-i oii oim oio ois oiv om- omi omm omo oms omv oo- ooi oom ooo oos oov os- osi osm oso oss osv ov- ovi ovo ovs ovv sii sim sio sis siv smi smm smo sms smv soi som soo sos sov ss- ssi ssm sso sss ssv svi svm svo svs svv vi- vii vim vio vis viv vm- vmi vmm vmo voi vom voo vos vov vsi vsm vso vss vsv vvi vvm vvo vvs vvv