C11111333133313232233133313331333133313232233312111133132231233132313221   >>    C1111133313331323223313331333133313331323223331211113313223123313231322   <<    C11111333133313232233133313331333133313232233312111133132231233132313223   >>      C11111333133313232233133313331333133313232233312111133132231233132313222   >>