C1111233131211111211113313331333133313232321333133313331333131121323221231   >>    C111123313121111121111331333133313331323232133313331333133313112132322123   <<    C1111233131211111211113313331333133313232321333133313331333131121323221233   >>      C1111233131211111211113313331333133313232321333133313331333131121323221232   >>