UNPUTRIDLY

id in it li nu pi ti un up ut

din dip dit dry dui dun dup lid lin lip lit nil nip nit nut pin pit piu ply pry pud pul pun pur put rid rin rip run rut til tin tip try tui tun tup ulu urd urn urp yid yin yip yup

dint dipt dirl dirt drip duit duly dunt durn duty idly idyl inly lint liny litu lunt luny nurd nurl pily pint piny pirn pity ptui puli punt puny puri purl pyin rind ruin ruly runt rynd tidy tiny tirl trip turd turn tyin undy unit yird yurt