End string must be greater than start string

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS"
NAME="Ubuntu"
VERSION="14.04.1 LTS, Trusty Tahr"

crunch-3.6

crunch 2 3 ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 -s 3A -e 1RR
End string must be greater than start string

crunch 2 3 ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 -s 2A -e 1RR
End string must be greater than start string

crunch 2 3 -f ./charset.lst ualpha-numeric -s 2A -e 1RR
End string must be greater than start string

crunch 2 3 ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 -s 1A -e 1RR
Crunch will now generate the following amount of data: 143460 bytes
ОК

crunch 2 3 ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 -s 0A -e 1RR
Crunch will now generate the following amount of data: 143568 bytes
ОК

crunch 2 3 ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 -s AA -e 1RR
Crunch will now generate the following amount of data: 146376 bytes
ОК

crunch 2 3 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -s AA -e RRR
Crunch will now generate the following amount of data: 146746 bytes
ОК

crunch 2 3 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ -s AA -e 1RR
End string must be greater than start string