C11111211113313112113313331333133313331333132313331333133313331333132321221121   >>    C1111121111331311211331333133313331333133313231333133313331333133313232122112   <<    C11111211113313112113313331333133313331333132313331333133313331333132321221123   >>      C11111211113313112113313331333133313331333132313331333133313331333132321221122   >>