if/then/else and blanks

[jmunro10]

this is what i have. how do i avoid blank lines here? I have 40 if the else lines.

Code:
{if {mergefield colum1} = "1" "UGRD Bank Statement" ""}
{if {mergefield colum2} = "1" "I20 Form" ""}
{if {mergefield colum3} = "1" "GR Bank Statement for I20" ""}
{if {mergefield colum4} = "1" "Graduate English Language Test" ""}


Result:
UGRD Bank Statement

GR Bank Statement for I20


Graduate English Language Test


Desired Result:
UGRD Bank Statement
GR Bank Statement for I20
Graduate English Language Test