The verb form of strength can be; strengthen, strengths.
there is no such move as stength
Juan Forn was born in 1959.
Teresa Forn was born in 1959.
Josep Maria Forn's birth name is Josep Maria Forn i Costa.
Foreningen Forn Sed was created in 1999.
The Urban Dictionary defines forn as foreign pornography.
Swedish Forn Sed Assembly was created in 1994.
hercules
"Forn" is not a commonly used word in modern English. It may be a typo or a variant spelling of another word.
they forn earthquakes
Josep Maria Forn was born on April 4, 1928, in Barcelona, Barcelona, Catalonia, Spain.
stength in numbers