hi, I need to turn a matrix (?) into three columns, example attached

hi, I need to turn a matrix(?) into three columns, i know it might seem basic stuff, but i can't get my head around it.
basically a 3x3 should become 9 lines of details.
i need a formula that can do that
example attached -first tab the matrix, then the wished result in tab no 2
thank you so much,
Butterlord
aka
Pietro