i-v iii iim iio iip iis im- imi imm imo imp ims imv io- ioi iom ioo iop ios iov ipi ipm ipo ipp ips ipv is- isi ism iso isp iss isv ivi ivo ivp ivs ivv m-o m-v mi- mii mim mio mip mis miv mmi mmm mmo mmp mms mmv moi mom moo mop mos mov mpi mpm mpo mpp mps mpv msi msm mso msp mss msv mvi mvm mvo mvp mvs mvv o-i oii oim oio oip ois oiv om- omi omm omo omp oms omv oo- ooi oom ooo oop oos oov op- opi opm opo opp ops opv os- osi osm oso osp oss osv ov- ovi ovo ovp ovs ovv p-p pii pim pio pip pis piv pmi pmm pmo pmp pms pmv poi pom poo pop pos pov ppi ppm ppo ppp pps ppv ps- psi psm pso psp pss psv pvi pvm pvo pvp pvs pvv sii sim sio sip sis siv smi smm smo smp sms smv soi som soo sop sos sov spi spm spo spp sps spv ss- ssi ssm sso ssp sss ssv svi svm svo svp svs svv vi- vii vim vio vip vis viv vm- vmi vmm vmo voi vom voo vop vos vov vpi vpm vpo vpp vps vsi vsm vso vsp vss vsv vvi vvm vvo vvs vvv