Sorry, but there is nothing yet known as a replacement for t1b.

Maybe some reasonable answers will be found next time you come.

Your alternative for t1b is not listed? Suggest!

No companions for t1b have been suggested so far.

You have in mind a companion for t1b and it is not yet here? Propose!

Scale is based on the average worldwide traffic of t1b in all years. Click on graph for more.

t1b