--- (1) ---
true
true
true
true
true
true
true
true

 --- (2) ---
true

 --- (3) ---
true
true
true
true
true
true

 --- (4) ---
true
true
true
true

 --- (5) ---
true
true
true

 --- (6) ---
true
true
true

 --- (7) ---
true
true
true
true
true
true
true

 --- (8) ---
true
true
true