Dependent on intellect & ideas, intellect-consciousness arises. The meeting of the three is contact.

With contact as a requisite condition, there is feeling.

What one feels, one perceives.

What one perceives, one thinks about.

What one thinks about, one objectifies.

Based on what a person objectifies, the perceptions & categories of objectification assail him/her with regard to past, present, & future ideas cognizable via the intellect.