C11111211113313112113313331333132313331322113121133132313331323223312121   >>    C1111121111331311211331333133313231333132211312113313231333132322331212   <<    C11111211113313112113313331333132313331322113121133132313331323223312123   >>      C11111211113313112113313331333132313331322113121133132313331323223312122   >>