C11111333133313232233133313331333131123313233313231333132331133133313223321   >>    C1111133313331323223313331333133313112331323331323133313233113313331322332   <<    C11111333133313232233133313331333131123313233313231333132331133133313223323   >>      C11111333133313232233133313331333131123313233313231333132331133133313223322   >>