Right parallel line crossing under left line from right back, all out of use
<a href="//commons.wikimedia.org/wiki/User:AlgaeGraphix" title="User:AlgaeGraphix">AlgaeGraphix</a>
2020-01-07
<a href="//commons.wikimedia.org/wiki/File:BSicon_vSTR-STR%2Brgo.svg" title="File:BSicon vSTR-STR+rgo.svg">File:BSicon_vSTR-STR+rgo.svg</a>