create table from regular expressions applied to rows of multiple tables

Readers,

Tables contains text:

table1
text1, 10
text2, 20
text3, 30
text4, 40

table2
text2, textB 20
text3, textC 30
text5, textD 50
text6, textE 60
text7, textF 70
text8, textG 80

Is it possible to create a new table (table3) using a regular
expression (e.g. ^text*) to select rows which are of the same table
format as table2:

table3
text2, textB 20
text3, textC 30

Thanks in advance.