C11111333133313232233133313331333131123313233313231333132311212313221   >>    C1111133313331323223313331333133313112331323331323133313231121231322   <<    C11111333133313232233133313331333131123313233313231333132311212313223   >>      C11111333133313232233133313331333131123313233313231333132311212313222   >>