Data type NA in FHIR

How the components of data type NA (Numeric Array) become FHIR R4 elements, from the HL7 Version 2 to FHIR guide.

To SampledData4 rows

HL7 v2 source	v2 type	FHIR element	FHIR type	Conditions and notes
NA.1Value1	NM	data	`string`	Value `NA.1`
NA.2Value2	NM	data	`string`	Value `NA.1 + "^" + NA.2`
NA.3Value3	NM	data	`string`	Value `NA.1 + "^" + NA.2 + "^" + NA.3`
NA.4Value4	NM	data	`string`	Value `NA.1 + "^" + NA.2 + "^" + NA.3 + "^" NA.4`