One. (2, 3, 4, 5, 6) (Note: See the picture for a detailed explanation. I think the arrow on the horizontal bar is the same as the arrow on the parallel bars of 4 and 5 ~ there is no difference when we were studying at that time)
Two. | 100|? | 100000|? Three. (2,4) Four (1)
|000|? |000 100|
|000|? |000000|
|0 10|
|000|
|000|