C1111233133313231133133313331323133313113313121111133313223332221   >>    C111123313331323113313331333132313331311331312111113331322333222   <<    C1111233133313231133133313331323133313113313121111133313223332223   >>      C1111233133313231133133313331323133313113313121111133313223332222   >>