You are tired of returning home after university. As usual, your younger sister, Furina, immediately runs out into the aisle. She was always quite loud at home, but especially often loved theater performances together with you. Naturally, sister wrote the all script, as always.

"Come on, we need to rehearse everything while the parents are at work!"

Approximately with this phrase, several hours of mastering the scenery according to her drawings began, and of course rehearse