C11111211113313112113313331333133313133313232233133313231121113111   >>    C1111121111331311211331333133313331313331323223313331323112111311   <<    C11111211113313112113313331333133313133313232233133313231121113113   >>      C11111211113313112113313331333133313133313232233133313231121113112   >>