2. (6 points) Suppose L1 = {01, 10} and L2 = {00, 11}. 2.1) List all strings in L1 UL2. 2.2) List all strings in LL. 2.3) Is the empty string in Lj? 2.4) Is 110001 in (L1) L ? 2.5) Is the string 011001 in Li? 2.6) Is 010001 in (L)(L)