C111123313331323113313331333133313331323132333133313331312111111313321   >>    C11112331333132311331333133313331333132313233313331333131211111131332   <<    C111123313331323113313331333133313331323132333133313331312111111313323   >>      C111123313331323113313331333133313331323132333133313331312111111313322   >>