Likewise, each fixed 32 bit shift unit uses {TAIL ~ direct bit} routing to effect {HEAD ~ bit shifts} taking advantage of the cyclic nature of shifts required by the MD5 hashing algorithm 
Likewise , each fixed 32 bit shift unit uses { TAIL ~ direct bit } routing to effect { HEAD ~ bit shifts } taking advantage of the cyclic nature of shifts required by the MD5 hashing algorithm
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH