Explain this Theravada Wheel of Life?
Craving, attachment in the present lead to becoming and fabrication due to ignorance. Ignorance is included and if it is not present there is no craving and clinging to feelings hence no fabrication.

What is subjected to birth decay and death (in the future) is a being composed of the 5 aggregates due to fabrication and ignorance in the present.

Craving, clinging in the past due to ignorance hence leading to becoming and fabrication creates the rebirth, mind and matter, 6 sense bases, contact and feeling in the present.