tondi otndi tnodi ntodi ontdi notdi todni otdni tdoni dtoni odtni dotni tndoi ntdoi tdnoi dtnoi ndtoi dntoi ondti nodti odnti donti ndoti dnoti tonid otnid tnoid ntoid ontid notid toind otind tiond itond oitnd iotnd tniod ntiod tinod itnod nitod intod onitd noitd ointd iontd niotd inotd todin otdin tdoin dtoin odtin dotin toidn otidn tiodn itodn oitdn iotdn tdion dtion tidon itdon diton idton oditn doitn oidtn iodtn diotn idotn tndio ntdio tdnio dtnio ndtio dntio tnido ntido tindo itndo nitdo intdo tdino dtino tidno itdno ditno idtno ndito dnito nidto indto dinto idnto ondit nodit odnit donit ndoit dnoit onidt noidt oindt iondt niodt inodt odint doint oidnt iodnt diont idont ndiot dniot nidot indot dinot idnot
Note: these 'words' (valid or invalid) are all the permutations of the word tondi. These words are obtained by scrambling the letters in tondi.