(n) complete devotion; body and soul; one's best[edict]
を
(prt) (arch) (See を) marks object of action, etc. (also adds emphasis)[edict]
尽くす
つくす
(v5s) (1) to exhaust; to run out; (2) to devote; to serve (a person); to befriend; (aux-v) (3) to do to exhaustion; (P)[edict]
ます
(n) (1) measuring container; measure; (2) box (seating at a theatre, etc.); (3) square on a grid; cell of a grid; (4) (斗 only) square bearing block (at the top of a pillar); (P)[edict]