C11111333133313232233133313331333131123313221211113313133313231321321   >>    C1111133313331323223313331333133313112331322121111331313331323132132   <<    C11111333133313232233133313331333131123313221211113313133313231321323   >>      C11111333133313232233133313331333131123313221211113313133313231321322   >>