C11111333133313232233133313331333131123313233313231333132313223213321   >>    C1111133313331323223313331333133313112331323331323133313231322321332   <<    C11111333133313232233133313331333131123313233313231333132313223213323   >>      C11111333133313232233133313331333131123313233313231333132313223213322   >>