In any row #,u,v,w,x,y,z
'#' is the joint number of the support.
'u' is the displacement degree of freedom about global X-axis direction.
'v' is the displacement degree of freedom about global Y-axis direction.
'w' is the displacement degree of freedom about global Z-axis direction.
'x' is the rotational degree of freedom about global X-axis direction.
'y' is the rotational degree of freedom about global Y-axis direction.
'z' is the rotational degree of freedom about global Z-axis direction.
'R' represents restrain against the degree of freedom.
'F' represents no restrain against the degree of freedom.