C1111233131211111211113313331333131211111132233133313331313331322312331   >>    C111123313121111121111331333133313121111113223313331333131333132231233   <<    C1111233131211111211113313331333131211111132233133313331313331322312333   >>      C1111233131211111211113313331333131211111132233133313331313331322312332   >>