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|