fff ffi ffm ffo ffr ffu fif fii fim fir fiu fmf fmi fmm fmo fmr fmu fof foi fom foo for fou frf fri frm fro frr fru fuf fui fum fuo fur fuu i-f iff ifi ifm ifo ifr ifu iif iii iim iio iir iiu im- imf imi imm imo imu io- iof ioi iom ioo ior iou ir- irf iri irm iro irr iru iu- iui ium iur m-f m-o m-r mff mfi mfm mfo mfr mfu mi- mif mii mim mio mir miu mmf mmi mmm mmo mmr mmu mof moi mom moo mor mou mrf mri mrm mro mrr mru muf mui mum mur muu o-i of- off ofi ofm ofo ofr ofu oif oii oim oio oir oiu om- omf omi omm omo omr omu oo- oof ooi oom ooo oor or- orf ori orm oro orr oru ou- ouf oui oum ouo our rff rfi rfm rfo rfr rfu rif rii rim rio rir rmf rmi rmm rmo rmr rof roi rom roo ror rou rrf rri rrm rrr rru ruf rui rum ruo rur ruu uff ufi ufm ufo ufr ufu uif uii uim uio uir uiu um- umf umi umm umo umr umu uom uoo uor ur- urf uri urm uro urr uru uum uur uuu