C1111233131211111211113313331333133313232321333131333132313231323131231   >>    C111123313121111121111331333133313331323232133313133313231323132313123   <<    C1111233131211111211113313331333133313232321333131333132313231323131233   >>      C1111233131211111211113313331333133313232321333131333132313231323131232   >>