欠勤届け[kekkintodoke] report of an absence (at work)
欠席届け[kessekitodoke] report of a school absence
行き届く[ikitodoku] to be scrupulous
婚姻届[konintodoke] marriage registration
送り届ける[okuritodokeru] to send to

転入届[tennyuutodoke] notification of moving in
届く[todoku] to reach
届ける[todokeru] to deliver
届け出る[todokederu] to report
届け先[todokesaki] destination

行けない[ikenai] wrong
行る[yaru] to send
オリエント急行[orientokyuukou] Orient express
カ行[kagyou] classification for Japanese verb with the dictionary form ending in "ku"
ガ行[gagyou] classification for Japanese verb with the dictionary form ending in "gu"

サ行[sagyou] classification for Japanese verb with the dictionary form ending in "su"
ザ行[zagyou] classification for Japanese verb with the dictionary form ending in "zu"
スパイ行為[supaikoui] espionage
タ行[tagyou] classification for Japanese verb with the dictionary form ending in "tsu"
ダ行[dagyou] classification for Japanese verb with the dictionary form ending in "dzu"