Selection: Create an indirection that turns right, goes forward, goes backward, and turns left. Create a second indirection that executes the first one when the robot is at address $2,4,$ and $6$ and then goes forward. Use an iteration to repeat the second one $7$ times. Where F$=$Forward, B$=$Backwards, R$=$Right, L$=$Left. In a format like this $+$ZFRFBL$\_$F$.$FZ

$+$Z$?2$R$\_?4$F$\_?6$F$\_.*7$Z