ffff ffrr ffun fmnp fnuf fprf frmn frum frun fuff fufu fumy funf fur- furm furn furr fury fuyu fynn fyry mfrp mmff mmmm mmpr mmpu mmrf mmrp mmun mmyy mppf mppp mprf mprp muff mufu mumm mump mumu mumy munn munu murn murr muru mury mymp mymy mypn myrr myry n-up nfff nmff nmfp nnnn nnpr nprm nrpn nuff numm nump numu nunn nuny nurn nurp nurr nuru nyny nyrf pfff pffr pfyn pmmp pmmu pmpm pnnm pnpp pnup pppn pppp pprf pprm ppru ppur prnp prrm pruf prum pruu prym puff pump pumy punu puny pupu pupy pur- purp purr puru pury puy- pym- pyn- pypy pyr- pyry rmrp rppn rrmp rrrr rrum rrun ruff rumm rump rumy runf runn runy rupp rupy rurp ruru ruun ryff rynn ryun ryyf u-rp umff unfp unmr unrf unum upmy upnp uppp uppu uppy upup urff urry urum urun urup urur uryn uuuu uuyn ympn ymur yrun yryn yuff yufu yump yuny yurn yury yuyu yyff yyyy