(prefix indicating ordinal number, e.g. first, number two etc)[cedict]
五七
(n) (1) five and seven; (2) (abbr) (See 五七日) 35th day after a person's death[edict]
次
cìㄘˋ
next in sequence; second; the second (day, time etc); secondary; vice-; sub-; infra-; inferior quality; substandard; order; sequence; hypo- (chem., meaning extra oxygen atom); classifier for enumerated events: time[cedict]
来
láiㄌㄞˊ
to come; to arrive; to come round; ever since; next[cedict]