UNDERCROP

de do ed en er ne no nu od oe on op or pe re un up

cep cod con cop cor cru cud cue cup cur den doc doe don dor due dun duo dup ecu end eon ern err nod nor ode one ope orc ore oud our pec ped pen per pod pro pud pun pur rec red rep roc rod roe rue run udo upo urd urn urp

cero code coed cone cope cord core corn coup cred crop crud cued curd cure curn curr deco doer done dope dore dorp dorr dour drop duce dune dupe dure durn duro durr ecru euro nerd node nope nude nurd once oped open pend peon pond pone pore porn pour prod puce pure purr redo rend repo rode rope roue roup rude rued ruer rune udon unco unde undo updo upon