C2132113313331312121111331333132313331323133313223313231333132321312121   >>    C213211331333131212111133133313231333132313331322331323133313232131212   <<    C2132113313331312121111331333132313331323133313223313231333132321312123   >>      C2132113313331312121111331333132313331323133313223313231333132321312122   >>