MONOMORPHEMIC

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cero chin chip chon chop cine cion cire coho coin coir come comp cone coni coon coop cope core corm corn crop echo emic emir epic heir hemp herm hern hero hire hoer home homo hone hoop hope horn icon inch inro iron memo meno merc mice mien mime mine mire mome momi mono moon moor mope more morn nice noir nome nope nori norm omen omer once open pech pein peon peri perm phon pice pier pine pion pirn poco poem pome pomo pone pooh poon poor pore porn prim prom rein repo rice rich rime ripe romp room rope