slowo1 = "Ala"
slowo2 = "ma"
slowo3 = "kota"
print slowo1+slowo2+slowo3
print slowo1 + " " + slowo2 + " " + slowo3
slowo3 = "psa"
print slowo1 + " " + slowo2 + " " + slowo3
slowo1 = slowo2 * 2
print slowo1 == "Ala"
print slowo1 + " " + slowo3
print slowo1 and "Ala"
print 'a' in slowo3
print slowo1[::2]
print (slowo1+slowo2+slowo3)[::2]
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