C11111211113313112113313331333131211113313231311331323221322331323132321   >>    C1111121111331311211331333133313121111331323131133132322132233132313232   <<    C11111211113313112113313331333131211113313231311331323221322331323132323   >>      C11111211113313112113313331333131211113313231311331323221322331323132322   >>