{{convert/round/sandbox{{{?}}}|{{{1}}}|{{{c}}}|{{{2}}}|{{{3}}}|{{{4}}}||}} {{{u}}}
     In Convert/LtestT: 1={{{1}}} 2= 3= 4= c={{{c}}}


The Template:Convert/LtestT is a subtemplate of Template:Convert to test changes to deeper subtemplates, when Convert option "lk=test" is set to trigger use of the test-subsystem sandbox versions.