In also to; to as well as in: implying movement: used to show any relation, at the time of existence, scenario, inclusion, etc., that's expressed by in, followed closely by the thought of movement or path inwards. Compare in.
Of change of condition: after such verbs as pass, fall, grow, change, convert, transmute, etc. Into, as thus indicating change, may when used with an intransitive verb give it a transitive force: as, to talk a man into submission; to reason one's self into error.
In: not implying movement: because, he fought to the Revolution.
Unto; until. Compare intil.
Within, implying deficiency: because, the pole was for enough time into a foot.