旧きゅう皮質ひしつ

kyūhishitsu

1. Not old cortex.; Not old cortical.

1. Was old cortex.

1. Old cortex

1. Old leather; Worn leather

1. Not old leather.; Not an old-fashioned style.

1. It's not old leather.; It isn't old leather.

1. Was old cortex.

1. Old cortex.; Old leather.

1. Not old leather.; Not made of old leather.

1. Wasn't old cortex.; Wasn't former cortex.

1. Old cortex, likely.; Probably old cortex.

1. Was not old cortex.; Was not old leather.

1. Wasn't old leather.; Wasn't old cortex.

1. Probably old cortex.; Likely old cortical tissue.

1. Was not old leather.; Was not former leather.

1. If/when old cortex; If it were old cortex

1. If/when old cortex; Provided the old cortex

1. If/when old cortex; If the old cortex exists