iii iim iio iis iit im- imi imm imo ims imt io- ioi iom ioo ios iot is- isi ism iso iss ist iti itm ito its itt m-o mi- mii mim mio mis mit mmi mmm mmo mms mmt moi mom moo mos mot msi msm mso mss mst mti mtm mto mts mtt o-i oii oim oio ois oit om- omi omm omo oms omt oo- ooi oom ooo oos oot os- osi osm oso oss ost ot- oti otm oto ots ott sii sim sio sis sit smi smm smo sms smt soi som soo sos sot ss- ssi ssm sso sss sst sti stm sto sts stt tii tim tio tis tit tmi tmm tmo tms tmt to- toi tom too tos tot tsi tsm tso tss tst tti ttm tto tts ttt