C11111333133313232233133313331333133313331233132313331322132313221   >>    C1111133313331323223313331333133313331333123313231333132213231322   <<    C11111333133313232233133313331333133313331233132313331322132313223   >>      C11111333133313232233133313331333133313331233132313331322132313222   >>