table =  ...

r = ...

c = ...


cell = table[ r ][ c ]

row = table[ r ]

cell = row[ c ]

x = [ "abc", "ab", "a" ]
y = "abc ab a"

n = x.count( "a" )   # n is 1 because there is only one element that exactly
                     # matches "a"

i = x.index( "a" )   # x[2] is an exact match
j = y.find( "a" )    # y[0] is an exact match for substring "a"

reply1 = input( "enter words: " )
w1 = reply1.split()

reply2 = input( "enter words: " )
w2 = reply2.split()


for x in w1 :
    for y in w2:  # unnlikely