地下 ちか１ いっ階 かい

chika ikkai

1. Not the first basement floor.; Not on the first basement level.

1. Was the first basement level.; It was on the first basement floor.

1. Basement level one; On the first basement floor

1. Basement level; First basement floor

1. It is not the first basement floor.; It's not on the first basement level.

1. It is not the first basement level.; It's not on the first basement floor.

1. Was on the first basement floor.; It was the first basement floor.

1. First floor.; Basement one.

1. It is not the first basement floor.; It is not on the first basement level.

1. Was not the first basement level.; Wasn't on the first basement level.

1. Probably the first basement floor.; Probably on the ground floor.

1. It wasn't on the first basement level.; It wasn't the first floor below ground.

1. Wasn't the first basement level.; Wasn't on the first basement floor.

1. Probably on the first basement floor.

1. Was not the first basement level.; Was not on the first basement level.

1. If/when on the first basement floor.; If it were on the first basement floor.

1. If/when the first basement floor; Provided the first basement floor exists

1. If/when on the first basement floor; If/when underground level one