C1111133313331323223313331333133313112331323331323133313231313312121   >>    C111113331333132322331333133313331311233132333132313331323131331212   <<    C1111133313331323223313331333133313112331323331323133313231313312123   >>      C1111133313331323223313331333133313112331323331323133313231313312122   >>