C11111211113313112113313331333132313331322113121111331323221211331311223132321   >>    C1111121111331311211331333133313231333132211312111133132322121133131122313232   <<    C11111211113313112113313331333132313331322113121111331323221211331311223132323   >>      C11111211113313112113313331333132313331322113121111331323221211331311223132322   >>