I am coming from a kitchen to the front of my house and I am about to meet to a rectangular tile inlay right in front of the front door. The wood is going from the front of the house to the back and I want to frame the tile inlay with the wood before proceeding. The problem is that I need to meet with the wood coming from the kitchen and I need to go from the tile inlay to a different room and either side. Therefore the wood need to have the tongue going both ways. How do I do this?

Spline.