iii iim iio iis iiu iix im- imi imm imo ims imu imx io- ioi iom ioo ios iou is- isi ism iso iss isu iu- iui ium ius ixi m-o mi- mii mim mio mis miu mix mmi mmm mmo mms mmu mmx moi mom moo mos mou mox msi msm mso mss msu msx mui mum mus muu mux mxi mxs mxu o-i oii oim oio ois oiu om- omi omm omo oms omu omx oo- ooi oom ooo oos oox os- osi osm oso oss osu osx ou- oui oum ouo ous ox- oxi oxo oxx sii sim sio sis siu six smi smm smo sms smu smx soi som soo sos sou sox ss- ssi ssm sso sss ssu ssx sui sum suo sus suu sux sxi sxm sxs sxu uii uim uio uis uiu um- umi umm umo ums umu uom uoo uos uox usi usm uso uss usu usx uum uus uuu uxo uxu xii xio xis xiu xix xmi xmm xmo xms xmu xmx xoi xom xoo xos xox xsi xsm xss xui xus xxi xxo xxx