multi/sub material copy

hello firend
i need help again ~

i have 2 object

1. first object have 3 material ids
and have multi/sub material map

2. second object have 3 material ids
and don;t have multi/sub material map

i would like to copy material

1's multi/sub material id 1 -> 2's multi/sub material id 1 copy

1's multi/sub material id 2 -> 2's multi/sub material id 2 copy

1's multi/sub material id 3 -> 2's multi/sub material id 3 copy

can you understand ~~~