Count items from a dynamic list

https://learninghub.kx.com/forums/topic/count-items-from-a-dynamic-list

Hi, Masters:

Say I have a list contains dynamic sym variables:

    `a`b`a`b`c`d`c`b`a...

How can I count each sym and get an output such as:

    `a:4

    `b:3

    `c:2

    `d:1
q)lt: `a`b`a`b`c`d`c`b`a

q)group lt
a| 0 2 8
b| 1 3 7
c| 4 6
d| ,5

q)count each group lt
a| 3
b| 3
c| 2
d| 1

Seems not difficult. Any other method?