153231

To find out all possibilities we looked all our options and started
with the smaller numbers for less than. Then we looked at the larger
numbers for greater than. Our question was to use the numbers 1,1,2,3
to make less than and greater than sequences.

5.11<5.23
5.11<5.32
5.12<5.13
5.12<5.31
5.21<5.31
5.13<5.21

5.23>5.11
5.32>5.11
5.21>5.13
5.31>5.21
5.31>5.12
5.13>5.12