days (of duration) / numerals of the days

every

each, every, per

solve (a problem); answer (a question); unravel (a riddle) / comb; untangle (hair)

untie; unravel; undo (a fastening); unwrap / dispel (doubts); clear up (a matter)

matter of taste

puzzle (type of game; includes jigsaw puzzles, etc.)

liked, favorite

fondness, favor, favour

freely; as much as one wants