C1111233131211111211113313331333133313232321333133313221323131213221   >>    C111123313121111121111331333133313331323232133313331322132313121322   <<    C1111233131211111211113313331333133313232321333133313221323131213223   >>      C1111233131211111211113313331333133313232321333133313221323131213222   >>