C1111233131211111211113313331333132313231323223313331311211313222311   >>    C111123313121111121111331333133313231323132322331333131121131322231   <<    C1111233131211111211113313331333132313231323223313331311211313222313   >>      C1111233131211111211113313331333132313231323223313331311211313222312   >>