getting multiple variables information in one variable after importing txt file

After importing delimited using abcd.txt data this is the following output I'm getting on my data editor.

The first four-digit should have been year, the next 2 digits represent State postal abbreviation, the next 2 digits express State FIPS code, the next 3 digits represent County FIPS code, and the next 2 digits are for Registry (Geographic Definition Only), the following single digit is for the race, the next digit is for Hispanic. The next digits are for gender, then the following 2 digits are for age (00-85), and the last 8 digits are for the population. The dictionary is also explained here if anyone cares to go through it. Also, NBER uploaded the refined dataset here ( 1990-2016 ) dta

How can I refine it like the dictionary of the data? So far, after importing it this is what it looks like. It's importing only 1 variable in name of v1 whereas there is information of 10 variables I put it in bold form.

Any suggestion ? I need the data from 2000-2020. Otherwise I could have used the NBER uploaded data where they uploaded it till 2016 from 1990.

This is the dictionary of the data

https://seer.cancer.gov/popdata/popdic.html

Code:

* Example generated by -dataex-. For more info, type help dataex
clear
input str26 v1
"1990AL01001991010000000239"
"1990AL01001991010100000190"
"1990AL01001991010200000203"
"1990AL01001991010300000220"
"1990AL01001991010400000208"
"1990AL01001991010500000216"
"1990AL01001991010600000204"
"1990AL01001991010700000198"
"1990AL01001991010800000219"
"1990AL01001991010900000252"
"1990AL01001991011000000255"
"1990AL01001991011100000224"
"1990AL01001991021100000196"
"1990AL01001991021200000192"
"1990AL01001991021300000197"
end