Moving text from cell 2 to cell 1

[Kilroy]

I have a table that has a clause number in the first column which is regular text and in the 2nd column there is sometimes a different number or letter but not always. need the identifier from column 2 to join with his brother in column 1. all are text a not number lists. Any help appreciated.

Current Table Rows
5.	Requirements Computer Programs
5.1	(a) identify extent which computer program conforms requirements Clauses 6 112
5.1	a) analysis shutdown system effectiveness
5.2	(i) change theoretical background
5.2	i) change data structure
5.2	1) change programming language
5.2	1. change computer program structure
5.2	(1). change computer program structure
5.2	Note: change embedded data eg correlations

Required Table Rows
5.	Requirements Computer Programs
5.1(a)	identify extent which computer program conforms requirements Clauses 6 112
5.1 a)	analysis shutdown system effectiveness
5.2(i)	change theoretical background
5.2 i)	change data structure
5.2 1)	change programming language
5.2 1.	change computer program structure
5.2(1).	change computer program structure
5.2 Note:	change embedded data eg correlations