fff ffi ffm ffs ffu fif fii fim fis fiu fmf fmi fmm fms fmu fsf fsi fsm fss fsu fuf fui fum fus fuu i-f iff ifi ifm ifs ifu iif iii iim iis iiu im- imf imi imm ims imu is- isf isi ism iss isu iu- iui ium ius m-f mff mfi mfm mfs mfu mi- mif mii mim mis miu mmf mmi mmm mms mmu msf msi msm mss msu muf mui mum mus muu sff sfi sfm sfs sfu sif sii sim sis siu smf smi smm sms smu ss- ssf ssi ssm sss ssu suf sui sum sus suu uff ufi ufm ufs ufu uif uii uim uis uiu um- umf umi umm ums umu usf usi usm uss usu uum uus uuu