<prologue>
#
# file generated by <program>
#
<command_loop># <command_data><end><back>
#

<diagram>

{
diagram            <diagram_index>
pre_factor         (<sign>1)*<symmetry_factor>

number_propagators <propagators>
number_loops       <loops>
number_legs_in     <legs_in>
number_legs_out    <legs_out>

<in_loop>
external_leg       q<in_index>|<vertex_index>|<field>
<back><end>

<out_loop>
external_leg       q<leg_index>|<vertex_index>|<dual-field>
<back><end>

<propagator_loop>
momentum           p<propagator_index>|<dual-vertex_index>,<vertex_index>|
<back><dual-field>,<field>
<back><end>
}

<epilogue>

<exit>
