Given the 2 state of the same group of Blocks:
{s_1}
{s_2}
Please select all state pairs (including block–block pairs, block–table pairs, and block–clear pairs) whose relative positions remain unchanged.
Please strictly follow this format for the output, including only the selected pairs:
### Output Format
<pairs> = [(Object1,Object2),(Object3,Object4),...]


<assistant>
<pairs> = 
