C1111233131211111211113313331333133313311211331333133313233211321   >>    C111123313121111121111331333133313331331121133133313331323321132   <<    C1111233131211111211113313331333133313311211331333133313233211323   >>      C1111233131211111211113313331333133313311211331333133313233211322   >>