C333312111133133312111133133313331333131111233133313223313221311   >>    C33331211113313331211113313331333133313111123313331322331322131   <<    C333312111133133312111133133313331333131111233133313223313221313   >>      C333312111133133312111133133313331333131111233133313223313221312   >>