C1111233133313231133133313331333133311221123121111113313233113331   >>    C111123313331323113313331333133313331122112312111111331323311333   <<    C1111233133313231133133313331333133311221123121111113313233113333   >>      C1111233133313231133133313331333133311221123121111113313233113332   >>