file t2-template.txt {
    {a=va1-a}
    {a=va2-a, b=va2-b}
    {a=va3-a, b=va3-b, c=va3-c}
    {a=va4-a, b=va4-b}
    {a=va5-a}
}
file t2-template.txt {
    pattern {a, b, c}
    {pt3-a, pt3-b, pt3-c}
}
