Spark flush against the right wall (diagonal helps) then quickly down grab or down back after to barely get into the pipe.

Requires:

"Morph"
"canDownGrab"
"canShinechargeMovementComplex"
{
  "canShineCharge": {
    "usedTiles": 18,
    "openEnd": 1
  }
}
{
  "shinespark": {
    "frames": 15
  }
}

Dev note: This only gets one pixel into the pipe, so a wiggle isn't possible without doing the down back. Assumes sparking from the ground, since there is an accessible farm before and after this strat.