Here is one way to minimally repair the grammar.  We keep exactly the original non‐terminal and terminal orderings, and only insert the needed terminals:

Changes made (inserted terminals underlined):

• rule_102: A48 → <u>3</u> 1  
• rule_108: A50 → <u>31</u> 32  
• rule_101: A47 → <u>26</u> 27  
• rule_87: A39 → A4 <u>6</u> 21  
• rule_79: A34 → <u>19</u> A24 <u>18</u>  
• rule_68: A29 → <u>11</u> A16 <u>17</u>  

With these inserts, A1 ⟹* the exact target sequence.

Updated production rules:  
rule_68: A29 -> 11 A16 17  
rule_79: A34 -> 19 A24 18  
rule_87: A39 -> A4 6 21  
rule_101: A47 -> 26 27  
rule_102: A48 -> 3 1  
rule_108: A50 -> 31 32