C1212121231123232233131323223313233313233313223313231133132322333121   >>    C121212123112323223313132322331323331323331322331323113313232233312   <<    C1212121231123232233131323223313233313233313223313231133132322333123   >>      C1212121231123232233131323223313233313233313223313231133132322333122   >>