C1111233131211111211113313231333133313331323331333133313233321132321   >>    C111123313121111121111331323133313331333132333133313331323332113232   <<    C1111233131211111211113313231333133313331323331333133313233321132323   >>      C1111233131211111211113313231333133313331323331333133313233321132322   >>