x1=t1=p2=p3=l2=v2 is a big-endian / most-significant-first tanru formed with x3=t2 modifying x2=t3=l1=v1, giving meaning x4=t4 in usage/instance x5=t5=v3.
x1=t1=p2=p3=j2=v2 is a little-endian / least-significant-first tanru formed with x2=t2 modifying x3=t3=j1=v1, giving meaning x4=t4 in usage/instance x5=t5=v3.