C11111211113313112113313331333131133133313112211232313331323232212111   >>    C1111121111331311211331333133313113313331311221123231333132323221211   <<    C11111211113313112113313331333131133133313112211232313331323232212113   >>      C11111211113313112113313331333131133133313112211232313331323232212112   >>