### A problem of the memory of the Kernel in sage 9.5.

I have a problem of finding all regular intervals in the Coxeter group A9. When I use the code below for small groups A1 up to A4 I find the intervals. But for big groups like A7,A8 (these are symmetric groups S8 and S9), etc in sage 9.5 they say that the memory is full. Is there a way of cleaning the used memory so that I can get the last intervals? Because I want to see how the last few intervals look like. Down is the code.

W=WeylGroup('A9', ~~prefix='s')
[s1,s2,s3,s4,s5]=W.simple_reflections()
S=W.simple_reflections()
T=W.reflections()
~~prefix='s')

[s1,s2,s3,s4,s5]=W.simple_reflections()

S=W.simple_reflections()

T=W.reflections()

for u in W:

```
for v in W:
```~~ for v in W:
~~ if u!=v and v!=W.long_element() and u.bruhat_le(v):
~~ ~~ K=Set([t for t in T if ~~u.bruhat_le(t~~*u) and (t*u).bruhat_le(v)])
u.bruhat_le(t*u) and (t*u).bruhat_le(v)])
if K.cardinality()==v.length()-u.length():
~~ print([u,v])~~
print([u,v])