What is the best way to radio transmit 10bits serial data?

I’ve try to use HT-12E, however, I feel very hard to assemble the 10 bits data as there is only 4 data bits in the encoder, therefore, I need to send 4 bits, 4bits, 4bits and 4 bits to assemble one 10bits data (microcontroller send 8 bits a time, therefore 16bits is required to send 10bits)

Could anyone please suggest some good modules to do the task.

Thank you very much.