C11111211113313112113313331333131211113313221333132313232222331   >>    C1111121111331311211331333133313121111331322133313231323222233   <<    C11111211113313112113313331333131211113313221333132313232222333   >>      C11111211113313112113313331333131211113313221333132313232222332   >>