C11111211113313112113313331333133313331333131211113313232212111133221323131   >>    C1111121111331311211331333133313331333133313121111331323221211113322132313   <<    C11111211113313112113313331333133313331333131211113313232212111133221323133   >>      C11111211113313112113313331333133313331333131211113313232212111133221323132   >>