Python 3.8 (pre-release)Python 3, 7568 bytes
lambda x:re.findall(f"^{'*'.join(map26*'%c*'}$"%(chr,range*range(65,91)),)}*$",x,10)
import re
Python had already a solution (here) but it didn't worked on tests with char like (éèàÈ...).
How it works :
re.findall
returns all the occurences of a given pattern in a given string.f"^{'*'.join(map26*'%c*'}$"%(chr,range*range(65,91)),)}*$"
produce the pattern^A*B*C*...Y*Z*$
which will match any upper abecedarian upper word.10
(=2|8
) passed in argument tore.findall
sets the flagre.IGNORECASE
(=2
) to disable caseCheck in the string and the flagre.MULTILINE
(=8
) which apply the pattern to each line of the string.