}
		if len(items) > 0 {
			operands = append(operands, items)
			if colon >= 0 && len(operands) == colon+2 {
				// AX:DX becomes DX, AX.
				operands[colon], operands[colon+1] = operands[colon+1], operands[colon]
				colon = -1
			}
		} else if len(operands) > 0 || tok == ',' || colon >= 0 {
			// Had a separator with nothing after.
			p.errorf("missing operand")
		}
	}