Can we switch from DL to UL without any special slot?

Hi,
In NR can we have 4DL-1UL without special slot with 5 slot periodicity?
I mean can we switch from DL to UL without any special slot?

I think some guard period should be present.

4-1 is: dddsu, s is both dl & ul + gap.

Thanks @Hainm, any reference from spec?

As 3GPP 38.104, transmitter off period should be >= 70/N ( N= SCS/15) micro second
For SCS 30Khz, N =2, off period >= 35us
each symbol is: 0.5ms/14 ~ 35us, so 2 ā€˜Sā€™ symbol is OK.