Assimilations involving with /th/

with + me  > wime
with + you > witchu
with + real cheese > wi? real (glottal)
with + light time > wi? light (glottal)
with + a fork > witha (voiced th, apical)
with + an orange > with in orange (voiced th, apical)
with + all > with (voiced th, apical)
with + four sticks > wi'four sticks (th + f > f)
with + seven clicks > wi? clicks (th + s > th ?)
with + two tea spoons > wi? two tea (th + t > t)
with + damp kitchen towels > wi? damp (th + d > d)
with + thunder > wi tunder (th + th > t)
with + the president > wi tuh president (th + th > t)

with + th > with:

http://www.unilang.org/viewtopic.php?f=21&t=9697&start=2550