-- -*- M2-comint -*- hash: 3287742817531033803

i1 : R = wordAlgebra(2);

i2 : f = ([1,2]_R ** [1,2]_R) -- shuffle product of Lt_1*Lt_1 with itself displayed as a non commutative polynomial

                       2   2
o2 = 2Lt Lt Lt Lt +4Lt  Lt
        1  2  1  2    1   2

o2 : R

i3 : f // wordFormat -- f displayed in the above notation

o3 = 2 [1, 2, 1, 2] + 4 [1, 1, 2, 2]

i4 : 
