l = [ 1 , 2 , 3 , 4 , 5 , 6 ] <EOL>
print ( l [ 1 : 3 ] ) <EOL>
print ( l [ : 2 ] ) <EOL>
print ( l [ 3 : ] ) <EOL>
print ( l [ - 4 : ] ) <EOL>
print ( l [ : - 2 ] ) <EOL>
print ( l [ : ] ) <EOL>