C11111211113313112113313331333133313331333132311233133313331333133112323223331   >>    C1111121111331311211331333133313331333133313231123313331333133313311232322333   <<    C11111211113313112113313331333133313331333132311233133313331333133112323223333   >>      C11111211113313112113313331333133313331333132311233133313331333133112323223332   >>