12. indirect -- in direct

Indirect (not direct) lighting will enhance the appearance of the room.
The order was in direct (opposite) conflict with our policy.

13. into -- in to

He walked into the office. ("Into implies entry). All sales are to be sent in to the sales manager. ("In" is an adverb in the verb phrase and "to" is a preposition.)
Mrs. Meeks came in to see me. (In is part of the verb phrase "came in" and "to" is part of the infinitive "to see").

14. maybe -- may be

If I don't hear from them soon, maybe (an adverb meaning "perhaps") I should call.
Mr. Bell may be (a verb meaning possibly) out of town next week.