C1111233131211111211113313331333133313331333133313331333133313233221311321   >>    C111123313121111121111331333133313331333133313331333133313331323322131132   <<    C1111233131211111211113313331333133313331333133313331333133313233221311323   >>      C1111233131211111211113313331333133313331333133313331333133313233221311322   >>