Which of these planes, if any, are close packed?

[rubah]

If I did not have Materials homework, I would be studying for my Statics quiz tomorrow.

If I did not have a Statics quiz tomorrow, I would be doing my cal homework before Drill tomorrow.

If I did not have drill tomorrow, I would be studying for the statics make-up quizzes tomorrow.

If I didn't have a statics make-up quiz on tomorrow, I'd be working linear algebra matrix problems and doing the take home quiz for monday.

If I didn't have the take home quiz for linear, I would be studying for the linear test on monday.

if I didn't have have a linear test on monday, i would be studying for my statics quiz on tuesday.

If I didn't have a statics quiz on Tuesday, I would be studying for the cal test on wednesday.

If I didn't have a cal test on wednesday, I would be doing my materials homework. due thursday.

Can you see how this is going?