words_sval_2

line = 'bell nest bed pen egg belt desk name meet is hello Hi your what you ten tent net fox box dog frog doll troll pig kid street tree jug mug cup sun elf bus milk see can sweet nice hill good_bye frog pond troll lorry tree street bee sweet ship fish dish shop shelf sheep'
def foo(line):
    return line.replace(" ", "', '")

print (foo(line))